Relevant bibliographies by topics / Dipòsits de Zn-(Fe-Pb)

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Academic literature on the topic 'Dipòsits de Zn-(Fe-Pb)'

Author: Grafiati
Published: 4 June 2021
Last updated: 18 February 2022

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Journal articles on the topic "Dipòsits de Zn-(Fe-Pb)"

1

Raghavan, V. "Fe-Pb-Zn (Iron-Lead-Zinc)." Journal of Phase Equilibria 24, no. 6 (December 2003): 561. http://dx.doi.org/10.1361/105497103772084651.

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Khuder, Ali, Mohammad Adel Bakir, Reem Hasan, Ali Mohammad, and Khozama Habil. "Trace elements in scalp hair of leukaemia patients." Nukleonika 59, no. 3 (August 1, 2014): 111–20. http://dx.doi.org/10.2478/nuka-2014-0014.

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Abstract The aim of this study was to determine the concentration of Fe, Ni, Cu, Zn and Pb in scalp hair of leukaemia patients and healthy volunteers, using the optimised XRF method. Leukaemia hair samples were classifi ed corresponding to type, growth and age of the participants. The results showed that the studied trace elements (TEs) in both of leukaemia and control groups were positively skewed. In comparison with the control group, lower Fe, Cu, Zn and Pb and higher of Ni medians were found in all studied leukaemia patients. The median rank obtained by Mann-Whitney U-test revealed insignifi cant differences between the leukaemia patients subgroups and the controls. An exact probability (α < 0.05) associated with the U-test showed signifi cant differences between medians in leukaemia patients and controls groups for Pb (lymphatic/control, acute/control), Cu (lymphatic/control, chronic/control), Ni (lymphatic/control, chronic/control) and Fe (chronic/control). Very strong positive and negative correlations (r > 0.70) in the scalp hair of control group were observed between Ni/Fe-Ni, Cu/Fe-Cu, Zn/Fe-Zn, Pb/Fe-Pb, Cu/Ni-Zn/Ni, Cu/Ni-Pb/Ni, Zn/Ni-Pb/Ni, Zn/Fe-Zn/Cu, Pb/Ni-Ni and Ni/Fe-Pb/Ni, whereas only very strong positive ratios in the scalp hair of leukaemia patients group were observed between Ni/Fe-Ni, Cu/Fe-Cu, Zn/Fe-Zn and Pb/Fe-Pb, all correlations were signifi cant at p < 0.05. Other strong and signifi cant correlations were also observed in scalp hair of both groups. Signifi cant differences between grouping of studied TEs in all classifi ed leukaemia groups and controls were found using principal component analysis (PCA). The results of PCA confi rmed that the type and the growth of leukaemia factors were more important in element loading than the age factor.
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Agbozu, Iwekumo, Bassey Uwem, and Boisa Ndokiari. "Uptake of Zn, Pb, Cu and Fe Ions from Spent and Unspent Engine Oil Using Termite Soil." International Journal of Chemistry 9, no. 3 (July 26, 2017): 85. http://dx.doi.org/10.5539/ijc.v9n3p85.

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Removal of Zn, Pb, Cu and Fe ions from unspent and spent engine oil was studied using Termite soil. Process parameters such as contact time and adsorbent dosage were varied. Values from contact time were used for predicting kinetics equation of their uptake. At optimum time of 40 minutes, percentage adsorption was of the order Fe>Zn>Cu>Pb for both spent and unspent engine oil. Kinetics equation such as Elovich, Intra-particle, Pseudo-first order and Pseudo-second order were tested. Results obtained shows that their sequestering pattern fit into the pseudo-second order kinetics. Initial reaction rates, h (mg/g.min) and α (mg. g-1min-1) for all metal ions obtained from Pseudo-second order and Elovich kinetic models followed the trends Zn>Fe>Cu>Pb and Zn>Fe>Pb>Cu respectively in spent engine oil while for unspent engine oil, the trend was Fe>Zn>Cu>Pb for h (mg/g.min) and Zn>Fe>Pb>Cu for α (mg. g-1min-1). Electrostatic attraction existing on the surface of the adsorbent assisted in the high initial reaction of Zn and Fe ions, implying good affinity of the ions for the adsorbent. Desorption constant ᵦ (g/mg) was of the trend Cu>Pb>Fe>Zn and Cu>Pb>Zn>Fe for spent and unspent engine oils respectively. Intra-particle diffusion constant kid (mgg-1min-1/2) followed a similar pattern, revealing strong binding between Zn and termite soil than any of the metal ion. This pilot research has been able to suggest a kinetic process for uptake of the studied ions from spent and unspent engine oil.
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Raghavan, V. "Fe-Ni-Pb-Zn (Iron-Nickel-Lead-Zinc)." Journal of Phase Equilibria 24, no. 6 (December 2003): 568. http://dx.doi.org/10.1361/105497103772084697.

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5

Sharma, R. C., and M. Srivastava. "The Fe-Pb-Zn system (iron-lead-zinc)." Journal of Phase Equilibria 18, no. 5 (September 1997): 481–83. http://dx.doi.org/10.1007/bf02647705.

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6

Suprapto, Sabtanto Joko, Iidrem Syafri, and Yoga Andriana. "ZONASI POTENSI MINERALISASI BESI-TEMBAGA-TIMBAL-SENG GUNAKAN DATA GEOKIMIA DAN GEOLOGI BERBASIS SISTEM INFORM GEOGRAFIS DI KABUPATEN SOLOK, PROVINSI SUMATERA BARAT." Buletin Sumber Daya Geologi 9, no. 1 (May 8, 2014): 8–19. http://dx.doi.org/10.47599/bsdg.v9i1.117.

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Kabupaten Solok, Provinsi Sumatra Barat mempunyai potensi sumberdaya minerallogam. Studi ini bertujuan untuk menentukan daerah potensi mineralisasi mineral logam Fe-Cu-Pb-Zn di Kabupaten Solok dengan menggunakan kombinasi model statistik rasio frekuensi dan sistem informasi geografis. Analisis dilakukan terhadap data sebaran litologdan struktur geologi serta data 4 jenis unsur unsur dari 433 sampel geokimia endapan sungai aktif. Hasil kajian menghasilkan sebaran spasial sebelas daerah potensi mineralisaslogam Fe-Cu-Pb-Zn. Penelitian lapangan dilakukan di daerah potensi Pisauilang, Kotanarudan Air Bertumbuk, ditemukan cebakan bijih besi di tiga lokasi dengan Fe sebagai unsupenyusun utama serta Cu, Pb, dan Zn, sebagai unsur ikutan. Kandungan bijih besi berupa Fe 18,15-70,9 %, Cu 0,025-2,34 %, Pb <0,001-0,004%, dan Zn 0,033-0,58%.
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7

Shuhaimi-Othman, M., Y. Nadzifah, R. Nur-Amalina, and N. S. Umirah. "Deriving Freshwater Quality Criteria for Iron, Lead, Nickel, and Zinc for Protection of Aquatic Life in Malaysia." Scientific World Journal 2012 (2012): 1–7. http://dx.doi.org/10.1100/2012/861576.

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Freshwater quality criteria for iron (Fe), lead (Pb), nickel (Ni), and zinc (Zn) were developed with particular reference to aquatic biota in Malaysia, and based on USEPA’s guidelines. Acute toxicity tests were performed on eight different freshwater domestic species in Malaysia which wereMacrobrachium lanchesteri(prawn), two fish:Poecilia reticulataandRasbora sumatrana, Melanoides tuberculata(snail),Stenocypris major(ostracod),Chironomus javanus(midge larvae),Nais elinguis(annelid), andDuttaphrynus melanostictus(tadpole) to determine 96 h LC50values for Fe, Pb, Ni, and Zn. The final acute value (FAV) for Fe, Pb, Ni, and Zn were 74.5, 17.0, 165, and 304.9 μg L−1, respectively. Using an estimated acute-to-chronic ratio (ACR) of 8.3, the value for final chronic value (FCV) was derived. Based on FAV and FCV, a criterion maximum concentration (CMC) and a criterion continuous concentration (CCC) for Fe, Pb, Ni, and Zn that are 37.2, 8.5, 82.5, and 152.4 μg L−1and 9.0, 2.0, 19.9, and 36.7 μg L−1, respectively, were derived. The results of this study provide useful data for deriving national or local water quality criteria for Fe, Pb, Ni, and Zn based on aquatic biota in Malaysia. Based on LC50values, this study indicated thatN. elinguis, M. lanchesteri, N. elinguis,andR. sumatranawere the most sensitive to Fe, Pb, Ni, and Zn, respectively.
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Chen, Su, Lei Chao, Li Na Sun, and Tie Heng Sun. "Impacts of Trace Elements Iron and Zinc on Phytoavailability of Heavy Metals Cadmium and Lead." Advanced Materials Research 664 (February 2013): 504–9. http://dx.doi.org/10.4028/www.scientific.net/amr.664.504.

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In this paper, the soil simulation pot experiment was carried out to study the impacts of trace elements iron (Fe) and zinc (Zn) on availability of cadmium (Cd) and lead (Pb). The self-made Cd and Pb compound contaminated soil was taken as the test soil, and wheat was taken as the test plant. The results show that with the increase in Fe dosage, overground dry weight, root dry weight, and total dry weight of wheat gradually increase; the application of Zn reduces overground dry weight, root dry weight, and total dry weight of wheat. Meanwhile, wheat biomass under Cd and Pb combined pollution is smaller than that under single Cd pollution or single Pb pollution. The application of Fe fertilizer increases Cd absorption of various parts of wheat. In the single Cd pollution treatment, with the increase in Fe dosage, Cd concentrations in roots, stems and leaves of wheat will first be increased, then decreased; in Cd and Pb combined pollution treatment, with the increase in Fe, Cd concentrations in roots, stems and leaves of wheat will also be increased. The application of Fe promotes the Pb absorption of wheat. With the increase in Fe dosage, Pb concentrations in roots, stems and leaves of wheat will first be increased, then decreased slightly. Compared with Zn0, Cd concentrations of different parts of wheat after Zn1 and Zn2 treatment increase significantly. In addition, with the increase in Zn dosage, Cd concentrations of different parts of wheat will first increase, then decrease. Regardless of single Pb pollution treatment or Cd and Pb combined pollution treatment, Pb concentrations of different parts of wheat decrease as Zn dosage increases. Under different Fe and Zn levels, and when Cd and Pb coexist, Pb can promote Cd absorption of plant, but Cd inhibits Pb absorption of plant.
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Prasath, P. Martin Deva, and T. Hidayathulla Khan. "Impact of Tsunami on the Heavy Metal Accumulation in Water, Sediments and Fish at Poompuhar Coast, Southeast Coast of India." E-Journal of Chemistry 5, no. 1 (2008): 16–22. http://dx.doi.org/10.1155/2008/132014.

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Investigations on the accumulation of heavy metals (Zn, Cu, Fe, Mn, Co, Pb, Cd and Ni) in water, sediments and fish (Mugil cephalus) using Atomic Absorption Spectrophotometer at Poompuhar coast, lying along the southeast coast of India was studied before and after tsunami. Accumulation of heavy metals was observed in the order of Sediments > Fish > Water. In water, the order was found to be Mn > Fe > Zn > Cu > Ni > Cd > Co > Pb; Mn recorded a maximum of 506.9µ. L-1and Pb recorded a minimum of 0.006µ. L-1. In sediments, the order was Mn > Fe > Cu > Zn > Pb ≈Co ≈Cd ≈ Ni; Mn recorded a maximum of 851.1µg.g-1and a minimum of below detectable levels were found in Pb, Co, Cd and Ni. In fish, the order was found to be Fe > Zn > Mn > Cu > Ni > Co ≈ Pb ≈ Cd; Fe recorded a maximum of 529.13 µg. g-1and a minimum of below detectable levels were found in Pb and Cd.
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Custodio, María, Daniel Álvarez, Walter Cuadrado, Raúl Montalvo, and Salomé Ochoa. "Potentially toxic metals and metalloids in surface water intended for human consumption and other uses in the Mantaro River watershed, Peru." Soil and Water Research 15, No. 4 (September 21, 2020): 237–45. http://dx.doi.org/10.17221/152/2019-swr.

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The concentration of Cu, Fe, Pb, Zn and As in the surface water intended for human consumption and other uses in the Mantaro River basin were analysed using multivariate methods. The water samples were collected from seven water bodies in the Junín region in June 2019, in the low discharge period. In each body of water, a sector with six sampling sites was established. The Cu, Fe, Pb, Zn and As contents were determined by the flame atomic absorption spectrophotometry method. The correlation analysis revealed positive and significant correlations (P &lt; 0.05) for the Zn/Pb, Pb/Fe and Zn/Fe pairs with a good association, higher than 0.80 and for the Pb/Cu, Fe/Cu, As/Pb and As/Zn pairs a weak degree of association (P &lt; 0.05). The analysis of the main components showed three components with their own values &gt; 1. The hierarchical grouping analysis classified the evaluated water bodies into three groups according to the concentration of the Cu, Fe, Pb, Zn and As. The high concentrations of heavy metals and arsenic recorded in the CIMIRM and MERIS irrigation channels reveal that the Mantaro River continues to be a sink for mine wastewater discharges and runoff from mining liabilities at the headwaters of the Mantaro basin. It is, therefore, necessary to implement urgent management policies to control and reduce the levels of contamination by potentially toxic metals and metalloids in the Mantaro River.
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Dissertations / Theses on the topic "Dipòsits de Zn-(Fe-Pb)"

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Navarro, Ciurana Dídac. "Caracterización y origen de los depósitos de Zn-(Fe-Pb) en la zona de Riópar (Prebético, SE de España)." Doctoral thesis, Universitat Autònoma de Barcelona, 2016. http://hdl.handle.net/10803/400145.

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La present Tesi té com objectiu l’estudi dels dipòsits de Zn a la zona de Riópar i les seves roques encaixants, que es localitzen just en el límit entre les zones del Prebètic Intern i l’Extern (Conca Bètica Mesozoica, SE d’Espanya). Això permetrà discernir el tipus i evolució dels fluids mineralitzants, així com els principals controls per la seva circulació, a partir de dades geològiques, petrogràfiques i geoquímiques. La zona de Riópar es caracteritza per presentar múltiples cossos dolomítics allotjats en carbonats de diferents edats. Les composicions isotòpiques de C-O dels cossos dolomítics en el Juràssic Inferior i Mitjà, així com en el Cretaci Superior (δ13C: +2,5 a +3,8‰; δ18O: +26,9 a +29,8‰), són similars a les composicions de les calcàries marines del Juràssic-Cretàcic (δ13C: +0.5 a +3.2‰; δ18O: +27.6 a +30.9‰), fet que suggereix una dolomitització per aigua marina a baixes temperatures. En contraposició, els estudis isotòpics de C-O i microtermomètrics desenvolupats en inclusions fluides de les dolomies allotjades en el Juràssic Superior-Cretàcic Inferior (δ13C: -2,3 a +0,8‰; δ18O: +25,1 a +27,6‰; Th: 150-250ºC) posen de manifest que aquestes dolomies varen ser formades per processos hidrotermals. Els dipòsits de Zn-(Fe-Pb) de Riópar es troben exclusivament en les dolomies d’origen hidrotermal, entre les falles de San Jorge i Socovos. Aquests jaciments es caracteritzen per presentar dos tipologies de mineralitzacions: i) hipogèniques de sulfurs de Zn-(Fe-Pb) de tipus Mississippí Valley (MVT), constituïdes per marcassita, esfalerita i galena; i ii) supergèniques de tipus calamina formades per smithsonita, hidrozincita i cerussita, així com oxi-hidròxids de Fe (hematites i goethita). Les dolomies hidrotermals i els sulfurs es varen formar per una mescla entre un fluid de baixa salinitat, probablement derivat del mar Cretàcic (Fluid A: ≤ 5% en pes eq. de NaCl), el qual va circular a través dels estrats Mesozoics, i una salmorra hidrotermal de conca (Fluid B: ≥ 25% en pes eq. de NaCl) amb metalls i sulfat, que va circular per el basament Paleozoic. Les relacions isotòpiques de Pb en cristalls de galena (206Pb/204Pb: 18,736-18,762; 207Pb/204Pb: 15,629-15,660; 208Pb/204Pb: 38,496-38,595) apunten a una única font de metall, segurament derivada de roques Paleozoiques. Per altre banda, les composicions isotòpiques de sofre dels sulfurs de metalls base (marcassita: -7,5 a -5,8‰ δ34S; esfalerita: -2,2 a +3,5‰ δ34S; galena: -2,8 a -2,4‰ δ34S), suggereixen que el sofre va derivar de sulfat Triàsic (marí y/o de dissolució d’evaporites). La reducció del sulfat (SO42-) a àcid sulfhídric (H2S) s’explica mitjançant reaccions termoquímiques amb compostos orgànic (ex., hidrocarburs, metà) en la zona de precipitació mineral. Les observacions de camp i els resultats de les simulacions de transport de calor i flux de fluid suggereixen que els fluids hidrotermals varen circular canalitzats predominantment a través de la falla de San Jorge, mentre que la falla de Socovos devia actuar com a barrera impedint la fuita del fluid hidrotermal cap el Prebètic Extern. Les composicions isotòpiques en C-O de la smithsonita (δ18O: 27,8 a 29,6 ‰; δ13C: -6,3 a +0,4‰), que constitueix la fase principal dels jaciments de calamina, posen de manifest que: i) el fluid oxidant era d’origen meteòric i va interactuar amb els sulfurs a temperatures de 12 a 19ºC, suggerint un procés de meteorització supergènica sota condicions de clima temperat; i ii) la font de carboni va resultar de la mescla entre dos components de CO2, un derivat de la dissolució de les roques carbonatades de caixa (font enriquida en 13C) i l’altre de la descomposició vegetal (font empobrida en 13C). Finalment, la combinació entre els estudis petrogràfics, isotòpics de C i O i microtermométrics seria la eina d’exploració més útil per identificar les dolomies que són favorables a allotjar mineralitzacions de Zn a la zona del Prebètic. Una de las àrees susceptibles a explorar es el bloc inferior de la falla de l’Alto-Guadalquivir.
La presente Tesis tiene como objetivo el estudio de los depósitos de Zn de la zona de Riópar y sus rocas encajantes, que se localizan justo en el límite entre las zonas del Prebético Interno y el Externo (Cuenca Bética Mesozoica, SE de España). Esto permitirá discernir el tipo y evolución de los fluidos mineralizantes, así como los principales controles para su circulación, a partir de datos geológicos, petrográficos y geoquímicos. La zona de Riópar se caracteriza por presentar múltiples cuerpos dolomíticos albergados en carbonatos de diferentes edades. Las composiciones isotópicas de C-O de los cuerpos dolomíticos en el Jurásico Inferior y Medio, así como en el Cretácico Superior (δ13C: +2,5 a +3,8‰; δ18O: +26,9 a +29,8‰), son similares a las composiciones de las calizas marinas del Jurásico-Cretácico (δ13C: +0,5 a +3,2‰; δ18O: +27,6 a +30,9‰), sugiriendo una dolomitización por agua marina a bajas temperaturas. En cambio, los estudios isotópicos de C-O y microtermométricos desarrollados en inclusiones fluidas de las dolomías alojadas en Jurásico Superior-Cretácico Inferior (δ13C: -2,3 a +0,8‰; δ18O: +25,1 a +27,6‰; Th: 150-250ºC) ponen de manifiesto que estas dolomías fueron formadas por procesos hidrotermales. Los depósitos de Zn-(Fe-Pb) de Riópar se encuentran exclusivamente en las dolomías de origen hidrotermal, entre las fallas de San Jorge y Socovos. Estos yacimientos se caracterizan por presentar dos tipologías de mineralizaciones: i) hipogénicas de sulfuros de Zn-(Fe-Pb) de tipo Mississippi Valley (MVT) constituidas por marcasita, esfalerita y galena; y ii) supergénicas de tipo calamina formadas principalmente por smithsonita, hidrocincita y cerusita, así como oxi-hidróxidos de Fe (hematita y goethita). Las dolomías hidrotermales y los sulfuros se formaron por una mezcla entre un fluido de baja salinidad, probablemente derivado del mar Cretácico (Fluido A: ≤ 5% en peso eq. de NaCl), el cual circuló a través de los estratos Mesozoicos, y una salmuera hidrotermal de cuenca (Fluido B: ≥ 25% en peso eq. de NaCl) con metales y sulfato, que circuló por el basamento Paleozoico. Las relaciones isotópicas de Pb en cristales de galena (206Pb/204Pb: 18,736-18,762; 207Pb/204Pb: 15,629-15,660; 208Pb/204Pb: 38,496-38,595) apuntan a una única fuente de metal, posiblemente derivada de rocas Paleozoicas. Por otra parte, las composiciones isotópicas de S de los sulfuros de metales base (marcasita: -7,5 a -5,8‰ δ34S; esfalerita: -2,2 a +3,5‰ δ34S; galena: -2,8 a -2,4‰ δ34S), sugieren que el azufre derivó de sulfato Triásico (marino y/o de disolución de evaporitas Triásicas). La reducción del sulfato (SO42-) a ácido sulfhídrico (H2S) se explica mediante reacciones termoquímicas con compuestos orgánicos (ej., hidrocarburos, metano) en la zona de precipitación mineral. Las observaciones de campo y los resultados de las simulaciones de transporte de calor y flujo de fluido sugieren que los fluidos hidrotermales circularon canalizados predominantemente a través de la falla de San Jorge, mientras que la falla de Socovos actuaría como barrera impidiendo el escape del fluido hidrotermal hacia el Prebético Externo. Las composiciones isotópicas en C-O de la smithsonita (δ18O: 27,8 a 29,6 ‰; δ13C: -6,3 a +0,4‰), que constituye las fase principal de los yacimientos de calamina, ponen de manifiesto que: i) el fluido oxidante era de origen meteórico e interaccionó con los sulfuros a temperaturas de 12 a 19ºC, sugiriendo un proceso de meteorización supergénica bajo condiciones de clima templado; y ii) la fuente de carbono resultó de la mezcla entres dos componentes de CO2, una derivada de la disolución de las rocas carbonatadas de caja (fuente enriquecida en 13C) y otra de la descomposición vegetal (fuente empobrecida en 13C). Finalmente, la combinación entre los estudios de petrográficos, isotópicos de C y O y microtermométricos sería la herramienta de exploración más útil para identificar las dolomías favorables a albergar mineralizaciones de Zn en la zona del Prebético. Una de las áreas susceptibles a explorar es el bloque inferior de la falla del Alto-Guadalquivir.
The aim of the present PhD Thesis is the study of the Zn ore deposits and their carbonate host rocks in the Riópar area, which is located in the limit between the Internal and External Prebetic Zones (Mesozoic Betic Basin, SE Spain). This study will constrain the type and evolution of mineralizing fluids and the main controls for fluid flow, from geological, petrographical and geochemical data. The Riópar zone is home to extensive outcrops of dolostone bodies, which are hosted within different age carbonates. The C-O isotopic compositions of the dolomitic bodies in Lower and Middle Jurassic, as well as in Upper Cretaceous (δ13C: +2.5 a +3.8‰; δ18O: +26.9 a +29.8‰), are within the range of Jurassic to Cretaceous marine limestones (δ13C: +0.5 a +3.2‰; δ18O: +27.6 a +30.9‰); this supports a seawater dolomitization model at low temperature. Nevertheless, the C-O isotopic and fluid inclusion microthermometric studies from dolostones hosted within Upper Jurassic and Lower Cretaceous carbonates (δ13C: -2.3 a +0.8‰; δ18O: +25.1 a +27.6‰; Th: 150-250ºC) suggest that these dolostones are formed by hydrothermal processes. The Riópar Zn-(Fe-Pb) deposits are enclosed within the hydrothermal dolostones, between San Jorge and Socovos faults. These deposits are characterized by two mineralization types: i) hypogenic Zn-(Fe-Pb) sulfides of Mississippi Valley type (MVT) constituted by marcasite, sphalerite and galena; and ii) supergenic non-sulfide deposits (calamine), formed by predominant smithsonite, hydrozincite and cerussite, as well as Fe-oxi-hydroxides (hematite and goethite). The hydrothermal dolostones and sulfides were formed by a mixing between a low salinity fluid, probably derived from Cretaceous seawater (Fluid A: ≤ 5 wt.% NaCl eq.), which flowed through Mesozoic strata, and a basinal brine (Fluid B: ≥ 25 wt.% NaCl eq.) with metals and sulfate, which flowed within the Paleozoic basement. The Pb isotopic ratios in galena crystals (206Pb/204Pb: 18.736-18.762; 207Pb/204Pb: 15.629-15.660; 208Pb/204Pb: 38.496-38.595) suggest a unique metal source, probably from within Paleozoic rocks. On the other hand, the S isotopic compositions from base metal sulfides (marcasite: -7.5 to -5.8‰ δ34S; sphalerite: -2.2 to +3.5‰ δ34S; galena: -2.8 to -2.4‰ δ34S), points to a sulfur source derived from Triassic sulfate (seawater and/or from dissolution of Triassic evaporites). The sulfate (SO42-) reduction to hydrogen sulfide (H2S) is explained by thermochemical reactions with organic compounds (e.g., hydrocarbons, methane) in the ore formation region. Field observations and results of heat transport and fluid flow simulations suggest that hydrothermal fluids must have flowed upwards predominantly along San Jorge fault, whereas the Socovos fault must have acted as a thermal barrier blocking the scape of fluid to the External Prebetic area. The C-O isotopic composition of smithsonite (δ18O: +27.8 to +29.6‰; δ13C: -6.3 to +0.4‰), which constitute the principal mineral phase of the calamine deposits, puts constrains on: i) the oxidizing fluid type, which was of meteoric origin and interacted with sulfides at temperatures of 12 to 19°C, suggesting a supergene weathering process for the calamine-ore formation under a temperate climate; and ii) the carbon source, that resulted from mixing between two CO2 components, one derived from the dissolution of the host-dolomite (13C-enriched source) and another form vegetation decomposition (13C-depleted component). Therefore, the combination of petrographical, C-O isotopes and microthermometrical studies can be used as an exploration tool to identify favorable dolostones to host Zn mineralizations in the Prebetic Zone. One of the susceptible areas to target is the footwall block of Alto-Guadalquivir fault.
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2

David, Nicolas. "Modélisation thermodynamique du système (Al, Cu, Fe, In, Pb, Sn, Zn)." Nancy 1, 2001. http://www.theses.fr/2001NAN10120.

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La modélisation thermodynamique du système (Al, Cu, Fe, In, Pb, Sn, Zn) permet la prévision du partage des éléments minoritaires entre les deux liquides issus de la démixtion du liquide (Pb, Zn) ainsi que dans les mattes intermétalliques cuivreuses ou ferro-alumineuses pouvant précipiter. La modélisation est basée uniquement sur une caractérisation des sous-systèmes binaires et ternaires engendrés par le système heptnaire. Les outils nécessaires à la modélisation tels que le logiciel Thermo-Calc, les formalismes mathématiques utilisés ainsi que les techniques expérimentales de potentiométrie et calorimétrie sont présentés. Un modèle original a été développé pour obtenir des estimations de grandeurs thermodynamiques des liquides ternaires à partir des informations binaires. Le résultat de la confrontation avec l'expérience des différents modèles proposés dans la littérature montre un avantage de cette nouvelle méthode dans le cas des systèmes dissymétriques. Dans l'étude des systèmes binaires, une réoptimisation a été réalisée pour les systèmes (Cu, Zn) et (Fe, Zn) permettant d'améliorer leurs descriptions des alliages riches en zinc. Concernant les systèmes ternaires, l'effort a été porté sur la description des phases liquides. La précipitation des intermétalliques ferro-alumineux a été rendue possible par une modélisation de la coupe isotherme à 450 ʿC du système (Al, Fe, Zn). Le premier essai de validation de la banque sur le système quinaire (Cu, In, Pb, Sn, Zn) a induit une modification du terme entropique des coefficients ternaires du liquide (Pb, Sn, Zn). L'essai de validation réalisé sur le système heptnaire a montré une bonne restitution des observations expérimentales concernant le partage des différents éléments entre les mattes et les deux liquides. Pour des raisons de confidentialité, cette dernière partie est distincte du corpus.
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3

Insley, Martin William. "Sedimentology and geochemistry of the driftpile, Ba-Fe-Zn-Pb mineralisation, Northeastern British Columbia, Canada." Thesis, Royal Holloway, University of London, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.701318.

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4

Deng, Hong. "Metal (Pb, Zn, Cu, Cd, Fe) uptake, tolerance and radial oxygen loss in typical wetland plants." HKBU Institutional Repository, 2005. http://repository.hkbu.edu.hk/etd_ra/629.

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5

Militon, Christian. "Métallogénie polyphasée à Zn, Pb, Ba, F et Mg, Fe de la région de Gèdre-Gavarnie-Barroude (Hautes-Pyrénées)." Grenoble : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb375937868.

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6

Marthe, Deyse de Brito. "Determinação de Al, Cu, Fe, Pb e Zn em amostras de alcachofra e catuaba por espectrometria de absorção atômica." Universidade Federal de Minas Gerais, 2011. http://hdl.handle.net/1843/SFSA-8LJNV2.

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Medicinal plants are used to prevention and treatment of diseases by the population. To ensure the safety, efficiency and quality control of herbal medicines, it is necessary to know its effects on human health, and also provide the mineral composition of these plants. The elements in plants can be explained by several factors, such as geological and climatic conditions that depend on their concentration in soil, human activities and type of plant species. However, the accumulation of metal ions possibly will be related to toxicity to the human body. In this work, it was analyzed leaves, extracts, tablets, capsules, and beverages from artichoke (Cynara scolymus L.) and catuaba (Trichilia catigua). The determination of aluminum, lead, copper, iron and zinc in these samples was realized by atomic absorption spectrometry with flame or graphite furnace after different strategies for sample pretreatment: microwave-assisted acid digestion, direct analysis and availability experiments using a solution that simulated gastric juice. A 23 full factorial design with central point was applied to study the effect of some variables, such as acid mixture, time and temperature in the digestion of artichoke leaves in the cavity-microwave oven. The digestion procedure was optimized and direct analysis of liquid samples for catuaba and artichoke were realized. Some results obtained after microwave acid digestion were compared to those obtained with the availability of elements in the digestive tract. Total concentrations, after microwave acid digestion were used as reference values to evaluate the efficiency of other proposed procedures. A NIST SRM 1573a was used to check the accuracy. Results were in agreement to the certificate values at 95% confidence level. The total concentration ranged considerably, but for copper and zinc in the catuaba power samples, the values were similar. Aluminium and iron were present in higher concentrations in most samples. For liquid samples, availability tests showed higher concentrations, when compared to the direct determination. However, after availability experiments, it was possible to figure out that these elements are not readily available in the samples investigated. For the metals investigated in the samples, the contents are within the limits allowed for consumption.
Plantas medicinais são empregadas como meio de cura, prevenção e tratamento de doenças por parte da população mundial. Para garantir a segurança, a eficácia e o controle de qualidade destes fitoterápicos, é necessário não somente conhecer os seus efeitos sobre a saúde humana, mas também, é importante analisar a composição mineral destes produtos. A presença de metais nas plantas pode ser justificada por diversos fatores, como atividades antrópicas, tipo de espécie vegetal e condições geoclimáticas, que dependem da concentração destes no solo. No entanto, o acúmulo de íons metálicos nestes organismos possivelmente apresentará um caráter de toxicidade à saúde humana. Neste trabalho, foram analisados folhas, extratos, cápsulas, comprimidos e bebidas originados a partir da alcachofra (Cynara scolymus L.) e da catuaba (Trichilia catigua). A determinação de alumínio, chumbo, cobre, ferro e zinco nestas amostras foi realizada por espectrometria de absorção atômica com chama e com forno de grafite, utilizando digestão em forno de micro-ondas com cavidade, análise direta e disponibilidade empregando uma solução simulada do suco gástrico como diferentes estratégias de pré-tratamento da amostra. Para a digestão das folhas de alcachofra por radiação micro-ondas foram avaliados o efeito de algumas variáveis, como mistura ácida, tempo e temperatura, através de um planejamento fatorial completo 23, com ponto central. O método de digestão otimizado e a análise direta de amostras líquidas, para alcachofra e catuaba, foram aplicadas nas amostras e alguns destes resultados obtidos comparados com a disponibilidade dos elementos no trato digestivo. Os teores totais dos analitos, obtidos após o procedimento de digestão das amostras em forno de micro-ondas com cavidade foram utilizados como valores de referência para avaliar a eficiência dos demais procedimentos propostos. A exatidão do método de digestão por radiação por micro-ondas foi avaliada ao aplicar o procedimento na folha de tomate (NIST SRM 1573 a), sendo que os resultados obtidos foram concordantes com os valores certificados a 95% de confiança. A concentração total dos elementos variou consideravelmente nas diferentes marcas, porém para cobre e zinco nas amostras de catuaba em pó, foram encontrados valores similares. Alumínio e ferro foram os elementos presentes em maiores concentrações em grande parte das amostras. Porém, após avaliação da disponibilidade, é possível levantar a hipótese de que estes dois elementos estariam pouco disponíveis nas amostras investigadas. Dentre os metais investigados nas amostras de alcachofra e catuaba, os teores encontrados estão dentro dos limites permitidos para o consumo.
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7

Jiménez, Franco Ma Abigail. "Geochemical and metallogenic model of the Santa Fe Sn-Zn-Pb-Ag-(In) deposit in the Central Andean tin belt." Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/461535.

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The Santa Fe mining district is located in the Central Andean tin belt and contains several Sn-Zn-Pb-Ag deposits. From the economic point of view, the most important deposits of the district are Japo, Santa Fe and Morococala. Beyond the traditional metal commodities, Central Andean Tin Belt could become an exploration target for indium, owing to the potential of the ore-bearing paragenesis to contain high concentrations of this technology-critical element. Notwithstanding the foregoing, important features about genesis and fluids evolution have been poorly studied. This work presents a reinterpretation of the Santa Fe deposit as a greisen deposit based in fluid inclusions and isotopic data, as well as, an extensive and accurate fieldwork. In the Santa Fe district, the ore mineralization occurs as two main styles: (a) Sn-rich mineralization, represented by cassiterite-quartz veins, and (b) Zn-Pb-Ag mineralization, represented by sphalerite, galena and stannite group phases. The In contents in igneous rocks are between 1.5 and 2.5 ppm, whereas in the ore concentrate it attains up to 200 ppm. The 1000×In/Zn ratio ranges from 25 up to 4000. Exceptionally high In values were found in sakuraiite (2.03 wt.%). Sakuraiite in this deposit show evidences for a link between stannite-kësterite solution. Thus, there is an important relationship between stannite group and sulfosalts. Likewise, an important number of metal associations, including base, alloy, noble and critical metals, have been found in this ore deposit. There is a noteworthy exploration potential for these metals in the Santa Fe District and even in similar deposits also elsewhere in the Central Andean tin belt.
El districte miner de Santa Fe està situat a la faixa estannífera de la serralada central andina, la qual conté importants dipòsits de Sn-Zn-Pb-Ag. Des del punt de vista econòmic, els dipòsits més importants d'aquest districte són els de Japo, Santa Fe i Morococala. Més enllà dels productes metàl·lics tradicionals, la faixa estannífera podria convertir-se en un potencial objectiu d'exploració degut als elements estratègics que conté, entre ells l'indi. No obstant això, el coneixement dels aspectes més destacats de l'evolució i la gènesi dels fluids mineralitzadors en aquesta zona és incipient. Per aquesta raó, aquest treball pretén aclarir i reinterpretar la història i evolució geològica del jaciment de Santa Fe, classificant-lo com un dipòsit tipus greisen a partir de les associacions minerals i el seu quimisme. Així com, en l'estudi geotermomètric i considerant les dades isotòpiques obtingudes i amb base en un treball exhaustiu i sistemàtic de camp. Les menes metàl·liques del jaciment es presenten en dos tipus principals: (a) mineralització rica en Sn, representada per les vetes de quars i cassiterita, i (b) mineralització de Zn-Pb-Ag, representada per esfalerita, galena i minerals del grup de l'estannita. La geoquímica del conjunt de roques ígnies encaixants també va ser analitzada. El contingut d'indi és d'entre 1,5 i 2,5 ppm, el concentrat arriba fins a 200 ppm i la relació 1000×In/Zn oscil·la entre 25 i 4000. Addicionalment, s'han trobat valors excepcionalment alts d'indi en cristalls de sakuraiita (2.03% en pes), mostrant l'evidència d'un vincle entre la solució d'estannita-kësterita, de la qual es pot inferir una relació genètica entre el grup de l'estannita i altres sulfosals en aquest dipòsit. El jaciment de Santa Fe també mostra un important nombre d'associacions metàl·liques, incloent-hi metalls base, aliatges, metalls nobles i metalls crítics. Hi ha un evident potencial d'exploració per aquests metalls al Districte de Santa Fe i fins i tot en dipòsits similars en altres zones de la faixa estannífera i en la serralada central andina.
El distrito minero de Santa Fe se encuentra ubicado en la faja estannífera de la cordillera central andina, la cual contiene importantes depósitos de Sn-Zn-Pb-Ag. Desde el punto de vista económico, los depósitos más importantes de este distrito son los de Japo, Santa Fe y Morococala. Más allá de los productos metálicos tradicionales, la faja estannífera podría convertirse en un potencial blanco de exploración para elementos tecnológicamente estratégicos como el indio. No obstante lo anterior, el conocimiento de los aspectos más destacados respecto a la evolución y la génesis de los " uidos mineralizantes en este sector andino continúan siendo incipiente. Por ello, este trabajo pretende esclarecer y reinterpretar la historia y evolución geológica del yacimiento de Santa Fe, el cual en el presente trabajo se ha clasi! cado como un depósito tipo greisen con base fundamentalmente en el estudio de las asociaciones minerales y su química mineral; así como, en el estudio geotermométrico y considerando los datos isotópicos obtenidos, sin dejar de lado un exhaustivo y sistemático trabajo de campo. En el distrito de Santa Fe, las menas metálicas se presentan en dos estilos principales: (a) la mineralización rica en Sn, representada por las vetas de cuarzo y casiterita y (b) la mineralización de Zn-Pb-Ag, representada por esfalerita, galena y minerales del grupo de la estannita. La geoquímica de la suite de rocas encajantes también fue analizado. El contenido de In en rocas ígneas resulta ser de entre 1.5 y 2.5 ppm, mientras que en el concentrado de mineral alcanza hasta 200 ppm. La relación 1000 × In / Zn oscila entre 25 y 4000. Aunado a estos reslutados, valores excepcionalmente altos de In fueron encontrados en cristales de sakuraiita (2,03 % en peso). La sakuraiita en este depósito representa un vínculo entre la solución de stannite-kësterite, de lo cual puede inferirse una relación genética entre el grupo de la estannita y otras sulfosales en este depósito. Asimismo, el yacimiento de Santa Fe también muestra un importante número de asociaciones metálicas, incluyendo metales bases, aleaciones, metales nobles y metales críticos. Hay un evidente potencial de exploración para estos metales en el Distrito de Santa Fe e incluso en depósitos similares también en otras zonas en la faja estannífera y en la cordillera central andina.
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8

Militon, Christian. "La metallogenie polyphasee a zn-pb-ba-f et mg-fe de la region de gedre-gavarnie-barroude (hautes-pyrenees)." Orléans, 1987. https://tel.archives-ouvertes.fr/tel-00798146.

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Une prospection geologique systematique de ces terrains a conduit a la reconnaissance de quatre principaux types de mineralisations dans le socle, le devonien inferieur et le cretace : 1 - une mineralisation stratiforme a zn-pb-ba-f de type sedimentaire - exhalatif omnipresente au sommet de la barre calcaire emsienne (devonien inferieur). 2 - de nombreux filons de types b. P. G. C. A gangue de siderite avec, pour certains, presence importante de barytine ou de fluorine ; ces filons correspondent a une phase de mineralisation tardi-hercynienne, probablement en liaison avec une phase tectonique compressive impliquant un contexte decrochant a composante cisaillante senestre, evoluant progressivement vers une distension nord-sud. 3 - des amas metasomatiques a mg-fe dans la barre calcaire emsienne, pouvant representer le sommet du systeme hydrothermal responsable des filons tardi-hercyniens du socle. 4 - la dissemination de galene dans les calcaires du santonien et de petits amas decimetriques de barytine secants sur la dolomie greseuse du cenomanien ; ces indices traduisent la remobilisation de filons tardi-hercyniens principalement d'apres l'identite des compositions isotopiques du plomb.
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9

LAVRADAS, RAQUEL TEIXEIRA. "DETERMINATION OF METALS (CU, FE, ZN, PB, CD AND NI) IN TISSUES OF MARINE ORGANISMS FROM ILHA GRANDE BAY, RJ, BRAZIL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=20536@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
Neste estudo, foram determinadas as concentrações de Cu, Fe, Zn, Cd, Pb e Ni no tecido muscular e fígado de três espécies de peixe (Mugil liza – tainha, iliófago; Micropogonias furnieri – corvina, carnívoro e Trichiurus lepturus – peixe espada, piscívoro), no tecido muscular de uma espécie de camarão (Farfantepenaeus brasiliensis – camarão rosa, onívoro) e também, no tecido muscular, vísceras e ovos de uma espécie de siri (Callinectes spp. – siri azul, onívoro) coletados na Baía da Ilha Grande. As concentrações dos elementos foram determinadas por espectrometria de massa com fonte de plasma indutivamente acoplado (ICP-MS). A metodologia analítica apresentou ótima exatidão e precisão quando comparada com amostras certificadas (DORM-3 e TORT-2). As concentrações de Cu, Zn, Cd, Ni e Pb apresentaram-se abaixo dos limites estabelecidos pela legislação brasileira e americana para a ingestão humana de pescado. As maiores concentrações de Cu, Fe, Zn, Cd, Ni e Pb foram observadas nos crustáceos. Nos peixes, as maiores concentrações dos elementos analisados foram observadas no fígado, e no siri, nas vísceras. O sexo dos indivíduos não influenciou no acúmulo dos elementos para os peixes, porém influenciou na acumulação de Cu, Fe, Zn, Cd e Ni no siri. Nos peixes, a maioria dos elementos não apresentou correlação com o comprimento dos indivíduos, com exceção do Pb, que apresentou correlação negativa na tainha e na corvina, e do cádmio, que apresentou correlação negativa na corvina. Nos crustáceos, alguns elementos também apresentaram correlação negativa com estes parâmetros, indicando que, tanto nos peixes quanto nos crustáceos, estes elementos não foram acumulados ao longo do crescimento. As concentrações encontradas foram diferentes nas estações seca e chuvosa.
In this study the concentrations of Cu, Fe, Zn, Cd, Pb and Ni were determined in muscle tissue and liver of three fish species (Mugil liza – mullet, illiophagus; Micropogonias furnieri – croaker, carnivorous, and Trichiurus lepturus – cutlassfish, piscivore), in the muscle tissue of a shrimp species (Farfantepenaeus brasiliensis – pink shrimp, omnivore) and in muscle tissue, entrails and eggs of a soft crab (Callinectes spp. – siri azul, omnivore) sampled from the Ilha Grande Bay. The concentrations of the elements were determined by inductively coupled plasma mass spectrometry (ICP-MS). The methodology showed good accuracy and precision when tested with certified reference materials (DORM-3 and TORT-2). The concentrations of Cu, Zn, Cd, Ni and Pb were below the limits established by the Brazilian and American legislation for human ingestion of fish products. The highest concentrations of Cu, Fe, Zn, Pb, Cd and Ni were found in the crustacean samples. In fish, the highest concentrations were observed in the liver and, in the soft crab samples, in the entrails. Sex did not influence element accumulation in fish, but influenced the accumulation of Cu, Fe, Zn, Cd and Ni in the soft crab. In fish, most elements did not show any correlation to length and weight, with the exception of Pb, which showed negative correlations in mullet and croaker and Cd which showed negative correlations in croaker. In crustaceans, some elements also presented negative correlations to these parameters, indicating that both in fish and crustaceans these elements are not accumulated during organism growth. The concentrations of the elements analyzed were statistically different in the dry and rainy seasons.
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Ivarsson, Filip. "Characterization of Fe-rich skarns and fluorapatite-bearing magnetite occurrences at the Zinkgruvan Zn-Pb-Ag and Cu deposit, Bergslagen, Sweden." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-72704.

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Zinkgruvan is a stratiform Zn-Pb-Ag and Cu sulphide deposit hosted by Paleoproterozoic strata in southern Bergslagen, Sweden. The deposit underwent medium-high grade regional metamorphism during the Svecokarelian orogeny, including partial melting of the host succession. Subordinate zones of semi-massive to massive magnetite and Fe-rich skarns occur in marble stratigraphically below the stratiform Zn-Pb-Ag ore but have so far not been described in detail in the scientific literature. This thesis presents results from detailed geological drill core logging, light optical microscopy (LOM) and scanning electron microscopy (SEM), which have been integrated with results from electron microprobe analysis (FE-EMPA) and whole-rock lithogeochemical analysis to provide a comprehensive description of the magnetite mineralization. Samples from the formerly mined magnetite deposits Västerby, Garpa and Åmme - distal to Zinkgruvan - have also been studied to allow for a comparison. The combined dataset has been used to 1) discuss the genesis of the magnetite mineralizations, including their relationship to base metal sulphide mineralization, and 2) evaluate potential vectors to Zn-Pb-Ag and Cu mineralization based on variations in the magnetite deposits. The semi-massive to massive magnetite, adjacent and associated Fe-rich skarn at Zinkgruvan are located in the stratigraphic upper part of the marble host. Three different varieties of magnetite mineralization can be defined: 1) semi-massive to massive magnetite mineralization in marble, 2) magnetite-bearing veins and 3) retrograde magnetite after olivine. Detailed optical microscopy has revealed a positive spatial correlation between aluminium spinel, apatite, magnetite and graphite. Semi-massive to massive magnetite mineralization at Zinkgruvan is enriched in P2O5, ΣREELa-Lu and Mn relative to a carbonate precursor. A positive correlation exists between P2O5 and ∑REELa-Lu, suggesting apatite and monazite are the primary REE-bearing minerals. The fact that the samples with highest P2O5 and ∑REELa-Lu are all Fe-rich rocks suggest the enrichment of the latter is related to the event which formed the Fe mineralization. Magnetite mineralization from the historic iron mines NW of Zinkgruvan share several key attributes with magnetite mineralization at Zinkgruvan. These include: 1) magnetite is the only iron oxide, 2) lithological and mineralogical similarities, including spatial association with marble, 3) equally high whole-rock Fe content, 4) equally high Mn (1-4 wt.% MnO), 5) equally high Eu anomalies (Eu/Eu* = 1.1- 2.8, avg. 1.75), and 6) local presence of sphalerite mineralization. Bending of the tectonic foliation from c. E-W to NW in the western part of Zinkgruvan suggest these magnetite mineralizations may be located along the same trend as those at Zinkgruvan. The normal calc-silicate mineralogy in Zinkgruvan marble (e.g. diopside, forsterite, phlogopite) can be explained by prograde regional metamorphic reactions between silicates and dolomite or calcite in impure carbonate rocks with a variable content of detrital siliciclastic and volcaniclastic material. However, the stratabound magnetite mineralization and associated Fe-rich skarns cannot be fully accounted for by this model. It is plausible that the Fe-rich skarns can be explained by similar reactions but involving more Fe-rich carbonates (ferrodolomite, ankerite, siderite). In the absence of quartz, siderite is known to thermally decompose into magnetite and graphite at temperatures above 465° C, whereby siderite-rich rocks may have been precursor to the semi-massive to massive magnetite mineralization. A recent genetic model suggests that the ore-forming fluids which formed Zinkgruvan where similar to those which formed McArthur-type SEDEX deposits. The presented results are consistent with this model, since e.g. siderite is a common alteration mineral in alteration envelopes to such deposits. Hence, magnetite mineralization, Zn-Pb-Ag and Cu-ore may all be related to the same pre-metamorphic hydrothermal system. The current genetic model places the magnetite mineralization at Zinkgruvan proximal to a fossil hydrothermal vent zone (the Burkland discontinuity). It is plausible that the magnetite mineralization mined at surface lay along the northern continuation of the Burkland discontinuity. Based on the assumption that the Burkland Cu-mineralization is most proximal and the old iron mines at Åmme are most distal along this structure, variations in whole-rock lithogeochemistry, mineral chemistry and mineralogy have been used to define nine vectors to economic Zn-Pb-Ag and Cu ore as is mined at Zinkgruvan.
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Books on the topic "Dipòsits de Zn-(Fe-Pb)"

1

Scherelis, Günther. Untersuchungen zur profildifferenzierten Variabilität der Schwermetalle Cr, Mn, Fe, Ni, Cu, Zn und Pb in rezenten und fossilen Parabraunerden Baden-Württembergs. Stuttgart: Geographisches Institut der Universität Stuttgart, 1989.

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Ciepał, Ryszard. Przenikanie S, Pb, Cd, Zn, Cu i Fe do biomasy oraz gleby ekosystemu leśnego (na przykładzie wschodniej części województwa katowickiego): Znaczenie bioindykacyjne. Katowice: Uniwersytet Śląski, 1992.

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Chiffoleau, Jean-François. Dosage de certains métaux traces: (Cd, Co, Cu, Fe, Ni, Pb, Zn) dissous dans l'eau de mer par absorption atomique après extraction liquide-liquide. Plouzané, France: Ifremer, 2002.

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Taillebois, E. Cadre géologique des indices sulfures à Zn, Pb, Cu, Fe du secteur de Gouézec-Saint-Thois: Dévono-Carbonifère du flanc sud du bassin de Châteaulin, Finistère. Rennes, France: Centre armoricain d'étude structurale des socles, LP CNRS no 4661, Université de Rennes I, 1987.

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Vandendriessche, S., B. Griepink, and K. Strijckmans. The Certification of Impurities (Ag, As, Bi, Cd, Co, Cr, Fe, Mn, Ni, Pb, Sb, Se, Sn, Te and Zn) in Copper: CRM 074. European Communities / Union (EUR-OP/OOPEC/OPOCE), 1992.

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Griepink, B., H. Muntau, and P. J. Wagstaffe. The Certification of the Contents Mass Fractions of Cd, Pb, Se, Cu, Zn, Fe and Mn in Wholemeal Flour and Lyophilized Brown Bread Reference Materials. European Communities, 1987.

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Griepink, B., and H. Muntau. The Certification of the Contents (Mass Fractions) of As, Cd, Cr, Cu, Fe, Hg, Mn, Pb, Se and Zn in Mussel Tissue (Mytilus Edulis): CRM No. 278. European Communities / Union (EUR-OP/OOPEC/OPOCE), 1988.

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J, Wagstaffe P., and Commission of the European Communities. Community Bureau of Reference., eds. The Certification of the contents (mass fractions) of Cd, Pb, As, Hg, Se, Cu, Zn, Fe and Mnin three lyophilised animal tissue reference materials: CRM no. 184 bovine muscle, CRM no. 185 bovine 185 bovine liver, CRM no. 186 pif kidney. Luxembourg: Commission of the European Communities, 1986.

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Book chapters on the topic "Dipòsits de Zn-(Fe-Pb)"

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Carow-Watamura, U., D. V. Louzguine, and A. Takeuchi. "Cu-Pb-Zn (247)." In Physical Properties of Ternary Amorphous Alloys. Part 3: Systems from Cr-Fe-P to Si-W-Zr, 140. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-14133-1_36.

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Walinga, I., J. J. Van Der Lee, V. J. G. Houba, W. Van Vark, and I. Novozamsky. "Digestion with HNO3-HClO4-H2SO4 and determination of Al, Cd, Cu, Fe, Mn, Pb, Zn." In Plant Analysis Manual, 77–117. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0203-2_4.

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Di Leo, Antonella, Santina Giandomenico, Lucia Spada, Nicola Cardellicchio, Francesco Paolo Buonocunto, Eliana Esposito, Luciana Ferraro, Laura Giordano, Alfonsa Milia, and Crescenzo Violante. "The offshore environmental impact by Sarno river in Naples bay (South-West Italy)." In Proceedings e report, 392–401. Florence: Firenze University Press, 2020. http://dx.doi.org/10.36253/978-88-5518-147-1.39.

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The goal of this work has been to establish the influence of the Sarno river on the present sedimentation in the Naples bay continental shelf by evaluating organic matter contribution and pollution. Sediments samples were collected, by van Veen grab, in 71 stations located offshore the Sarno river between Vesuvian and Sorrento Peninsula coasts. The characteristics of the surface sediments were analysed to highlight spatial trends in the (i) granulometry (grain-size); (ii) total nitrogen, organic carbon and total phosphorus; (iii) metal content (Hg, Cd, Pb, As, Cr, Cu, Ni, Zn, Fe and Mn).
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Anzulovich, A. C., L. B. Oliveros, L. D. Martínez, M. Roura, and M. S. Giménez. "Effect of Retinol Deficiency on Liver Concentration of Fe, Cr, Zn, Mn, Co, Cd, and Pb in Rat." In Trace Elements in Man and Animals 10, 181–82. New York, NY: Springer US, 2002. http://dx.doi.org/10.1007/0-306-47466-2_49.

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Walinga, I., J. J. Van Der Lee, V. J. G. Houba, W. Van Vark, and I. Novozamsky. "Digestion by dry-ashing followed by treatment with HF and determination of Ca, Cd, Cu, Fe, K, Mn, Na, Pb, Zn." In Plant Analysis Manual, 125–67. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0203-2_6.

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Adnan, Nur Azyan Fathiah, and Tengku Hanidza Tengku Ismail. "The Accumulation of Fe, Pb, Zn, Ni and Cd in Nerita lineata and Thais bitubercularis Obtained from Tanjung Harapan and Teluk Kemang, Malaysia." In From Sources to Solution, 397–401. Singapore: Springer Singapore, 2013. http://dx.doi.org/10.1007/978-981-4560-70-2_72.

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Maruthupandian, Surya, Napoleana Anna Chaliasou, and Antonios Kanellopoulos. "Recycling Mine Tailings for a Sustainable Future Built Environment." In Springer Proceedings in Energy, 163–69. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63916-7_21.

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AbstractThe future sustainable built environment focuses mainly on environmental conservation and technological innovation and development. However, with infrastructure development, the consumption of raw materials such as cement, gypsum, sand, and stones increases. Therefore, use of industrial waste as raw material in construction shall be proposed as a sustainable and environment friendly alternative. Also, the higher demand for mineral commodities have led to increased mining and hence increased mining waste. The mine tailings being the wastes from rocks and minerals processing, are generally rich in Si, Ca, Al, Mg, and Fe, and also have considerable amounts of heavy metals and metalloids such as Pb, As, Co, Cu, Zn, V, and Cr. When tailings contain sulphide minerals, it may also lead to acid mine drainage. This makes the effective and efficient recycling and reuse of mine waste a major environmental concern. However, the physical, mineralogical and chemical composition of the mine tailings renders it a suitable material for use in civil engineering applications. This paper discusses the use of mine tailings of different origins for different civil engineering applications such as bricks, ceramics, fine aggregates, coarse aggregate and cementitious binders. This approach has a potential to reduce the demand on existing natural resources to face the demands of the exponentially developing infrastructure.
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Bouabdellah, Mohammed, and Gilles Levresse. "The Bou Madine Polymetallic Ore Deposit, Eastern Anti-Atlas, Morocco: Evolution from Massive Fe–As–Sn to Epithermal Au–Ag–Pb–Zn ± Cu Mineralization in a Neoproterozoic Resurgent Caldera Environment." In Mineral Deposits of North Africa, 133–42. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31733-5_4.

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Pramod Kumar, Madri, Tella Lakshmi Prasad, Kothapalli Nagalakshmi, Nadimikeri Jayaraju, and Ballari Lakshmanna. "Concentrations of Heavy Metals as Proxies of Marine Pollution along Nellore Coast of South District, Andhra Pradesh." In Heavy Metals - Their Environmental Impacts and Mitigation [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.95275.

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Bottom sediment samples from six stations were sampled in pre monsoon 2016, from the Govindampalli – Durgarajupatnam (GP-DP) coast. Heavy metals viz., Fe, Mn, Cr, Cu, Ni, Pb, Zn and Cd analysis was carried out by using ICP-OES, and the average concentrations are as follows Fe > Mn > Zn > Cr > Pb > Ni > Cu > Cd. Various environmental indices like Factor Analysis (FA), Geo-accumulation Index (Igeo), Enrichment Factor (EF) and Pollution Load Index (PLI) were applied to the chemical data in order to know the levels of contamination and factors contributing to the pollution. Correlation coefficient results exhibits significant positive and negative relationships among Fe, Mn, Pb, Zn, Cd. All the environmental indices suggest that heavy metals were present at higher concentrations and the impacts of anthropogenic activities are crucial that serves as source of heavy metals in the zone. Relatively, maximum number of heavy metals viz., Fe, Ni and Pb were accumulated at the brackish environment i.e., at confluence of Swarnamukhi river (GP-S Station).
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Agbozu, Iwekumo, Bassey Uwem, and Boisa Ndokiari. "Advanced Study on Uptake of Zn, Pb, Cu and Fe Ions from Spent and Unspent Engine Oil Using Termite Soil." In Current Perspectives on Chemical Sciences Vol. 7, 39–50. Book Publisher International (a part of SCIENCEDOMAIN International), 2021. http://dx.doi.org/10.9734/bpi/cpcs/v7/3143d.

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Conference papers on the topic "Dipòsits de Zn-(Fe-Pb)"

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Tarita, Anatolie, and Valeriu Brasoveanu. "Bioacumularea metalelor grele în lemnul speciilor de arbori din ecosistemul forestier „Padurea Hânceşti”." In Impactul antropic asupra calitatii mediului. Institute of Ecology and Geography, Republic of Moldova, 2019. http://dx.doi.org/10.53380/9789975330800.11.

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The total content of heavy metals (As, Cd, Co, Cr, Cu, Fe, Ni, Pb, Zn) in the wood of different species of trees in the forest ecosystem "Forest Hânceşti" was determined. The contents of HM in different wood species (strong/soft) trees were different. Bioaccumulation Factor (BCF) of HM for different tree species differ greatly from species to species and ecosystem. Analyzed wood tree species have been bioaccumulated HM in the following order: Zn>Cu>Ni>Cd>Pb>Cr>Co>As. Mobility Factor (MF), evaluated in order to estimate accumulation of HM in the wood of the trees studied from atmospheric air through the leaf material, with the exception of Pb is >1, indicating polluted air as a major source of impairment of studded forestry species.
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Hussein, Marwan Abdulhadi, Mustafa A. Theyab, Yawooz Hameed Mahmood, and Baraa Mohammed Ibrahim Al-Hilali. "Heavy metals (Fe, Cu, Ni, Pb, Cd, Zn, Cr) effects on soil and plants in street crossroads at Samarra city-Iraq." In 2ND INTERNATIONAL CONFERENCE ON MATERIALS ENGINEERING & SCIENCE (IConMEAS 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0000443.

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Brankovic, Snezana, Radmila Glisic, Duško Brkovic, Gorica Đelic, Zoran Simic, Vera Rajicic, Ranko Saric, and Milun Jovanovic. "SADRŽAJ METALA U ZEMLJIŠTU I ODABRANIM BILJKAMA NA JALOVIŠTU FLOTACIJE RUDNIK DOO „RUDNIK"." In XXVI savetovanje o biotehnologiji sa međunarodnim učešćem. University of Kragujevac, Faculty of Agronomy, 2021. http://dx.doi.org/10.46793/sbt26.501b.

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The aim of this study was to determine the concentration of some metals (Ca, Mg, Mn, Fe, Zn, Ni, Cr, Cd) in the soil and species of Tussilago farfara L. and Clematis vitalba L. on the tailings and flotation of the mine DOO "Rudnik". Concentrations in the soil were: Pb and Cu - higher than the maximum allowed, limit and remediation values; Cd, Cr and Ni - higher than the maximum allowed and limit values, and Zn higher than the limit values (according to the regulations of the Republic of Serbia). Better bioaccumulation of all tested metals was shown by T. farfara species, especially leaves for Zn. The results indicate the possible use of aboveground parts of both plant species in the revitalization of tailings by bioaccumulation of tested metals.
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Ion, Adriana. "GEOCHEMICAL DISTRIBUTION OF Ti, Mn, V, Fe, Zn AND Pb IN STREAM SEDIMENTS IN RELATION TO GEOLOGY, LITHOLOGY AND ANTHROPOGENIC ACTIVITIES: OLTET RIVER BASIN, ROMANIA." In 18th International Multidisciplinary Scientific GeoConference SGEM2018. Stef92 Technology, 2018. http://dx.doi.org/10.5593/sgem2018/5.2/s20.063.

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Yalcin, Fasun. "INVESTIGATION OF STATISTICAL RELATIONSHIPS BETWEEN AU, AG, AS, BA, CD, CU, FE, PB, S, SB, AND ZN ELEMENTS OF ANTIMONY DEPOSIT IN NW CAMARDI � NIGDE (TURKEY)." In 16th International Multidisciplinary Scientific GeoConference SGEM2016. Stef92 Technology, 2016. http://dx.doi.org/10.5593/sgem2016/b12/s03.066.

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Bocanegra, Valentina, Jorge Enrique Ruiz-Urueña, Juan Carlos Molano Mendoza, and Luis Giovanny Peña Solano. "MINERAL CHEMISTRY OF THE BI-AG-PB-FE-CU-SB-ZN SULFOSALTS FROM VETIFORM STRUCTURE MINERALIZATION, IBAGUE, COLOMBIA: A POSSIBLE MID-TEMPERATURE LOW TO INTERMEDIATE SULFIDATION SYSTEM." In GSA 2020 Connects Online. Geological Society of America, 2020. http://dx.doi.org/10.1130/abs/2020am-356442.

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Kuznetsova, O. G. "FEATURES OF ACCUMULATION OF HEAVY METALS IN LANDSCAPES SURA-SVIAZHSKY WATERSHED PRIVOLZHSKY HILLS." In Всероссийская научная конференция, посвященная памяти доктора технических наук, профессора Александра Дмитриевича Потапова. Федеральное государственное бюджетное образовательное учреждение высшего образования "Национальный исследовательский Московский государственный строительный университет" (НИУ МГСУ), 2021. http://dx.doi.org/10.22227/978-5-7264-2875-8.2021.88-93.

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The data of the study of the concentrations of some metals (Cd, Cr, Cu, Fe, Mn, Pb, Zn) on the territory of the Sura-Sviyazhsky interfluve of the Volga Upland are presented. In the study area, the processes of accumulation of iron and copper are taking place. The maximum concentrations were registered in the illuvial horizon of the Prisursky GPP - 884 mg / kg. Iron is a typomorphic element for the studied area. In addition to accumulation processes, iron comes from parent rocks. Copper concentrations are also significant - up to 2.39 mg / kg, registered near the city of Alatyr.
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Khan, Mariam, Mohammad Al ghouti, Mustafa Nasser, Khalid Al Kuwari, and Oon Heng. "A study comparing Conventional Heating and Microwave Assistance Heating to Recover Metals from Municipal Solid Waste using Microwave-Assisted Leaching Technique." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0027.

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This study investigates and compares microwave-heating radiation with conventional heating. Incinerated municipal solid waste (IMSW) bottom ash (BA) and fly ash (FA) was utilized to recover various metals including Co, Cr, Cu, Fe, Mn, Zn,Pb, Al, Cd, Ba, Mg and V using various acid leaching agents i.e. HCl, HNO3 and H3PO4 were utilized and several parameters were altered in order to determine the most effective conditions. The current study concluded that microwave assisted leaching method is effective to recover most of the metals. In addtion, metals from MSWBA were much easier to recover in contrast with MSW-FA. 71% of Co, 75.69% of Cr, 56.19% of Cd, 35.23% of Ba and 30.2% of Pb, using 2M of HCl and 3M of H3PO4. While 1.48% of Cr, 0.93% of Fe, 1.19% of Mn, and 1.18% of Al were extracted using HCL and H3PO4 from MSWFA. It was also confirmed that higher power and longer contact time had a positive effect on metal recovery. From cost analysis point of view, microwave assisted leaching was fraction of the cost for conventional heating, making this method comparatively sustainable, energy efficient and safe.
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Kasatenkova, Maria, Maria Kasatenkova, Nicolay Kasimov, Nicolay Kasimov, Mihail Lychagin, and Mihail Lychagin. "CHANGES IN BACKGROUND CONCENTRATIONS OF METALS IN THE SEDIMENTS OF MARSH-LAGOON LANDSCAPES OF THE WESTERN CASPIAN." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b4315901d72.

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The last 1978-1995 transgression of the Caspian Sea caused the development of marsh-lagoon system along the Western Caspian seashore. Due to salt marshes are very vulnerable to sea-level fluctuations, complex and dynamic system, they may be considered as a regional model of rapid environmental transformation. Changing conditions of migration in the soils of marsh-lagoon landscapes during the sea-level rise influenced on the migration of elements of variable valency, primarily Fe and Mn, but also Zn, Cu, Pb, Ni, Co, leading to their mobilization in slightly alkaline and neutral reducing conditions and subsequent deposition on the geochemical barriers. That led to the emergence of landscape-geochemical anomalies of Fe and heavy metals in the soils of salt marshes with a characteristic time of formation of any persistent anomalies during 5-10 years.
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Kasatenkova, Maria, Maria Kasatenkova, Nicolay Kasimov, Nicolay Kasimov, Mihail Lychagin, and Mihail Lychagin. "CHANGES IN BACKGROUND CONCENTRATIONS OF METALS IN THE SEDIMENTS OF MARSH-LAGOON LANDSCAPES OF THE WESTERN CASPIAN." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b937de4b5c6.59040974.

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The last 1978-1995 transgression of the Caspian Sea caused the development of marsh-lagoon system along the Western Caspian seashore. Due to salt marshes are very vulnerable to sea-level fluctuations, complex and dynamic system, they may be considered as a regional model of rapid environmental transformation. Changing conditions of migration in the soils of marsh-lagoon landscapes during the sea-level rise influenced on the migration of elements of variable valency, primarily Fe and Mn, but also Zn, Cu, Pb, Ni, Co, leading to their mobilization in slightly alkaline and neutral reducing conditions and subsequent deposition on the geochemical barriers. That led to the emergence of landscape-geochemical anomalies of Fe and heavy metals in the soils of salt marshes with a characteristic time of formation of any persistent anomalies during 5-10 years.
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Reports on the topic "Dipòsits de Zn-(Fe-Pb)"

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Kaszycki, C. A. Appendix C, Computer generated colour contour maps [APPMAP], Au, As, Zn, Cu, Cr, Ni, Fe, Mn, U, Pb. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1989. http://dx.doi.org/10.4095/130768.

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Anderson, Andrew, and Mark Yacucci. Inventory and Statistical Characterization of Inorganic Soil Constituents in Illinois: Appendices. Illinois Center for Transportation, June 2021. http://dx.doi.org/10.36501/0197-9191/21-007.

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This report presents detailed histograms of data from the Regulated Substances Library (RSL) developed by the Illinois Department of Transportation (IDOT). RSL data are provided for state and IDOT region, IDOT district, and county spatial subsets to examine the spatial variability and its relationship to thresholds defining natural background concentrations. The RSL is comprised of surficial soil chemistry data obtained from rights-of-way (ROW) subsurface soil sampling conducted for routine preliminary site investigations. A selection of 22 inorganic soil analytes are examined in this report: Al, Sb, As, Ba, Be, Cd, Ca, Cr, Co, Cu, Fe, Pb, Mg, Mn, Hg, Ni, K, Se, Na, Tl, V, and Zn. RSL database summary statistics, mean, median, minimum, maximum, 5th percentile, and 95th percentile, are determined for Illinois counties and for recognized environmental concern, non-recognized environmental concern, and de minimis site contamination classifications.
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Anderson, Andrew, and Mark Yacucci. Inventory and Statistical Characterization of Inorganic Soil Constituents in Illinois. Illinois Center for Transportation, June 2021. http://dx.doi.org/10.36501/0197-9191/21-006.

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This report presents a statistical analysis of the Regulated Substances Library (RSL) developed by the Illinois Department of Transportation. The RSL is comprised of surficial soil chemistry data obtained from rights-of-way subsurface soil sampling conducted for routine preliminary site investigations. The 3.7-million-record RSL database is compared with four independent studies of inorganic soil constituents of naturally occurring soils in Illinois. A selection of 22 inorganic soil analytes are examined in this study: Al, Sb, As, Ba, Be, Cd, Ca, Cr, Co, Cu, Fe, Pb, Mg, Mn, Hg, Ni, K, Se, Na, Tl, V, and Zn. RSL database summary statistics, mean, median, minimum, maximum, 5th percentile, and 95th percentile, are determined for Illinois counties and for recognized environmental concern, non-recognized environmental concern, and de minimis site contamination classifications. The RSL database at a 95% confidence level is compared with current and proposed thresholds for defining naturally occurring soil concentrations for the selected analytes. The revised thresholds proposed by Cahill in 2017 are predominantly larger than the current standards found in the Tiered Approach to Corrective Action Objectives rules and are in better agreement with observed distributions of soil concentrations for both naturally occurring and RSL soils. A notable exception is antimony (Sb), for which Cahill proposed a reduced threshold similar in magnitude to the median for many Illinois Department of Transportation districts.
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