Relevant bibliographies by topics / Heavy metal chemistry

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Heavy metal chemistry'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

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Journal articles on the topic "Heavy metal chemistry"

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Wang, Lei, and Qi Chen. "Study on the Stabilization of Heavy Metal by Cement with Quantum Chemistry." Advanced Materials Research 955-959 (June 2014): 2935–39. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.2935.

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The quantum chemistry is a kind of efficient theoretical research methodology; it has become an important foundation and core technology to the computational materials science. The researches of melting mechanism, doping mechanism, mechanism of hydration activity can be used in the related areas of stabilization of heavy metal by cement. Density functional theory is reviewed in the study of the affective mechanism of cement hydration activity and the intensity of hydration by heavy metal, the mechanism of fixating heavy metals by mineral and the mechanism of lowering melting temperature. It is considered that quantum chemistry can be used to make a simulation at the micro level to explore the mechanism of cement-enclosed heavy metals and has a perfect theoretical guiding significance for further research.
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Percival, H. J., T. W. Speir, and A. Parshotam. "Soil solution chemistry of contrasting soils amended with heavy metals." Soil Research 37, no. 5 (1999): 993. http://dx.doi.org/10.1071/sr98055.

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The soil solution chemistry of heavy metal amended soils is of great importance in assessing the bioavailability of heavy metals and their toxicity to the soil biota. Three contrasting soils were amended with Cd(II), Cu(II), Ni(II), Pb(II), Zn(II), and Cr(III) nitrate salts at rates of 10–100 mmol/kg. This concentration range was chosen to encompass a wide range of effects on sensitive soil biochemical properties as part of a larger project. Soil solutions were extracted and analysed for pH, and for concentrations of heavy metals, and major cations and anions. Heavy metal speciation was calculated with the GEOCHEM-PC model. Heavy metal concentrations in the soil solutions increased both in absolute terms and as a percentage of added heavy metal as amendment rates increased. This observation is due to decreasing specific adsorption (caused by decreasing pH induced by the amendments), and to increasing saturation of cation exchange sites. For all 3 soils, the percentage increase commonly follows the order Cr(III) < Pb < Cu < Ni < Cd < Zn. The percentage of each metal held in the soil solution increased from soil to soil as cation exchange capacity, and therefore sorptivity, decreased. Both the concentration and activity of free heavy metal ions were substantially lower than the corresponding total metal concentration. This was ascribed to ion-pairing of metal ions with anions, particularly nitrate introduced in the amending solutions, as well as to increases in ionic strength as a result of amendment. Metal-anion species were mainly inorganic but where Cu and Pb were relatively low in concentration because of strong adsorption by the soils, organic complexation was likely to be significant. Speciation trends were similar for the 3 soils but different in magnitude.
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Maranescu, Bianca, Lavinia Lupa, and Aurelia Visa. "Heavy metal removal from waste waters by phosphonate metal organic frameworks." Pure and Applied Chemistry 90, no. 1 (January 26, 2018): 35–47. http://dx.doi.org/10.1515/pac-2017-0307.

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AbstractThe increase attention in the area of phosphonate metal organic framework is exemplified with a variety of applications and a rich chemistry of these compounds. Water pollution caused by heavy metal ions is a major concern due to their toxicity to many life forms. In order to decrease the heavy metals impact upon the environment various technologies of water treatment such as: chemical sedimentation, ion exchange, redox process are studied. The tendency is to find a versatile and economical method of heavy metals removal from waste waters. Phosphonate metal organic frameworks were obtained by the reaction of Ni(CH3COO)2·4H2O, phosphonic acid (phosphonoacetic (CP), vinyl phosphonic acid (VP) and N,N-bis(phosphonomethyl)glycine (Gly)) in hydrothermal conditions. Coordination polymers synthesized were characterized by FTIR, XRD, scanning electron microscopy (SEM) and thermal gravimetric analysis (TGA). The adsorption processes represent a very good alternative for heavy metals removal due to low costs and ease of operation. In the present paper the adsorption performance of the mentioned materials in the removal process of heavy metals from aqueous solutions, was studied using the batch method. The adsorption conditions were investigated by varying the initial pH, contact time and adsorbate initial concentration for chromium metal ions removal from aqueous solutions. It was found that the adsorption efficiency of the studied materials in the removal process of Cr(VI) ions from aqueous solutions is in the following order: Ni-CP<Ni-Gly≤Ni-VP.
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Sita, Lawrence R. "Heavy-Metal Organic Chemistry: Building with Tin." Accounts of Chemical Research 27, no. 7 (July 1994): 191–97. http://dx.doi.org/10.1021/ar00043a002.

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Rumhayati, Barlah, and Catur Retnaningdyah. "Integrative Assessment of Pb and Cd Pollution in Porong Estuaries Using Sediment Chemistry, Bioavailability, and Bioconcentration Factor." Indonesian Journal of Chemistry 18, no. 3 (August 30, 2018): 464. http://dx.doi.org/10.22146/ijc.26603.

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The aims of the research were to perform an integrative assessment of high metal pollution in Porong Estuary by determining (i) the distribution of heavy metals fraction in sediment, (ii) the potential risk of sediment to the metal bioavailability, and (iii) the bioaccumulation factor of heavy metals in benthic. Fractionation of heavy metals in the sediments was carried out by the European Community Bureau of Reference (BCR) sequential extraction method. The potential risk of sediment was determined from RAC (risk assessment code) value. Bioconcentration factor was determined based on the ratio of the concentration of heavy metals in benthic to the concentration of bioavailable metals from sediments. Heavy metal concentrations were measured using AAS. The results showed that non-resistant Pb and Cd was higher than resistant fractions. As a non-resistant fraction, Pb was found mostly as fraction 2, i.e., metal fraction adsorbed on the surface of the iron oxy/hydroxide sediment (34.5 ± 4.9%). Cd was more prevalent as fraction 3, i.e., an organic bound fraction (29.0 ± 1.8%). Furthermore, Porong Estuary sediments had medium risk for contributing the bioavailable Cd in the water bodies based on the RAC (15.6 ± 1.8%). Based on the bioconcentration factor, accumulation of Cd and Pb was low (48.00 ± 7.62% for BCF-Cd and 32.29 ± 6.90% for BCF-Pb). Based on the results above, it could be concluded that the Porong Estuary water bodies have not been polluted by Pb and Cd released from the aquatic sediment.
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Yona, Defri, Mochamad Arif Zainul Fuad, and Nurin Hidayati. "Spatial Distribution of Heavy Metals in the Surface Sediments of the Southern Coast of Pacitan, Indonesia." Indonesian Journal of Chemistry 18, no. 1 (February 28, 2018): 137. http://dx.doi.org/10.22146/ijc.22400.

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This study was conducted to analyze the spatial distribution of heavy metals from four different coastal areas in southern Pacitan, Indonesia: Pantai Watu Karung (WK), Pantai Teleng Ria (TL), Pantai Pancer (TP) dan Pantai Soge (SG). Data collected in this study included: temperature, salinity, DO, pH, sediment, organic matter and heavy metals in the sediments (Pb, Hg and Cd). The results showed different distribution patterns of heavy metals. Heavy metal concentrations, especially Pb and Hg, were found to be higher in Pantai Soge, while the concentration of Cd was higher in Pantai Pancer. An ANOVA test showed the distributions of Pb and Cd were significantly different (p < 0.01) between sampling sites. Variability of the physicochemical parameters influenced the variabilities of heavy metal concentrations among sampling sites. Overall, heavy metal concentrations in the study areas are rather low; however, attention is still needed due to heavy activities in the coastal areas of southern Pacitan that can contribute to heavy metal pollution.
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Percival, H. J. "Soil and soil solution chemistry of a New Zealand pasture soil amended with heavy metal-containing sewage sludge." Soil Research 41, no. 1 (2003): 1. http://dx.doi.org/10.1071/sr01061.

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The disposal of wastewater treatment sewage sludge onto agricultural land in New Zealand has led to the development of guidelines for the upper limit concentrations for total heavy metals in the underlying soil. However, those soil biological and biochemical processes now known to be most sensitive to environmental change are being used internationally to set new soil limits. The soil solution chemistry of a pasture soil amended with heavy metals has been used to assess the bioavailability of several important heavy metals. Field trial plots were treated with both spiked (Cu, Ni, or Zn) and unspiked sewage sludge to raise total soil metal concentrations, both above and below the current New Zealand guideline values. Soils were sampled pre-amendment in 1997 and post-amendment in 1998, 1999, and 2000. Soil solutions were extracted by centrifugation and analysed for pH, for concentrations of heavy metals, major cations and anions, and dissolved organic carbon. Heavy metal speciation was calculated with the GEOCHEM-PC model.Soil solution concentrations of Cu, Ni, and Zn increased with increasing levels of metal in the spiked sludge, reflecting increases in total soil metal concentrations. Cu concentrations changed little with time, but those of Ni and Zn tended to decrease. Cu was much more adsorbed by the soil than was Ni or Zn. The free metal ions, Cu2+, Ni2+, and Zn2+ (representing the most 'bioavailable' fraction), were the dominant metal species in the soil solutions. Variations in free metal ion percentages with metal-spiking level depended on the balance between organic and sulfate complexation for Cu, but on sulfate complexation alone for Ni and Zn. Cu and Ni free metal-ion activities in soil solution were relatively low even at the highest metal loadings in the soil, but may be high enough to cause toxicity problems. Zn activities were very much higher, and at the regulatory limit for zinc likely to affect sensitive biological and biochemical properties of the soil.
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Le Roch, Adrien, and Alexandre Gagnon. "Heavy metal orchestration." Nature Chemistry 12, no. 3 (February 27, 2020): 223–24. http://dx.doi.org/10.1038/s41557-020-0434-3.

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Kordialik-Bogacka, Edyta. "Surface properties of yeast cells during heavy metal biosorption." Open Chemistry 9, no. 2 (April 1, 2011): 348–51. http://dx.doi.org/10.2478/s11532-011-0008-8.

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AbstractProperties of metal solution, environmental conditions and the type of biomaterials (microorganism genus, species or even strain) influence the mechanism of metal biosorption and consequently metal adsorption capacity, affinity and specificity. Cell surface properties determine the metal-microorganism interactions to a large extent. In this work the relationship between yeast surface properties and yeast’s ability to bind cadmium, lead and copper was studied. Surface charge and hydrophobicity before and after biosorption were determined using dye retention and solvent partition assays, respectively. There were differences in the surface charge and relative hydrophobicity among different yeast strains. A higher metal adsorption capacity for more negatively charged yeast cells was observed. Biosorption of heavy metals resulted in modifications to the surface charge and hydrophobicity of yeast cells. However, there were not statistically significant changes in the yeast surface charge and hydrophobicity after binding of heavy metals depending on the nature of the metal, initial metal concentration and solution pH.
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Rusanescu, Marin, Carmen Otilia Rusanescu, Gheorghe Voicu, and Mihaela Begea. "Applications of Bentonite to Soil Decontamination." Revista de Chimie 69, no. 7 (August 15, 2018): 1695–98. http://dx.doi.org/10.37358/rc.18.7.6397.

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A calcium bentonite from Orasu Nou deposit (Satu Mare Romania) was used as raw material. We have conducted laboratory experiments to determine the influence of bentonite on the degree of heavy metal retention. It has been observed that the rate of retention increases as the heavy metal concentration decreases. Experimental studies have been carried out on metal retention ( Zn) in bentonite. In this paper, we realized laboratory experiments for determining the influence of metal (Zn) on the growth and development of two types of plants (Pelargonium domesticum and Kalanchoe) and the effect of bentonite on the absorption of pollutants. These flowers were planted in unpolluted soil, in heavy metal polluted soil and in heavy metal polluted soil to which bentonite was added to observe the positive effect of bentonite. It has been noticed that the flowers planted in unpolluted soil and polluted with heavy metals to which bentonite has been added, the flowers have flourished, the leaves are still green and the plants whose soils have been polluted with heavy metals began to dry after 6 days, three weeks have yellowish leaves and flowers have dried. Experiments have demonstrated the essential role of bentonite for the removal of heavy metals polluted soil.
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Dissertations / Theses on the topic "Heavy metal chemistry"

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Adams, C. "The chemistry of some heavy transition metal organometallics." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.595343.

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The thesis is concerned with the synthesis of some new organometallic and co-ordination compounds of platinum (in the main), tungsten and gold. Chapter 1 contains an overview of the field of platinum σ - acetylide chemistry from its origins to the present day, looking at structural types and the properties of this kind of compound. Chapter 2 contains details of the synthesis and characterisation of some novel bipyridyl containing platinum acetylides of the form cis-(tbu2bipy)Pt(-C≍C-R)2 (where R = Ph.p-C6H4-CH3, SiMe3, p-C6H4-NO2 and tbu2bipy = 4,4'-bis(tbutyl)-2,2'-bipyridine), looking at the IR, UV and NMR spectroscopy of these compounds and at the crystal structure of a representative member of this class. Some EHMO calculations pertaining to the HOMO and the LUMO of these compounds are presented, and EPR and in-situ spectroelectrochemical experiments that support these MO calculations are detailed. There is also a report on and a discussion of the attempted synthesis of some molecular squares. Chapter 3 looks at the use of the compounds detailed in Chapter 2 as chelating agents for copper and silver thiocyanate, tetrafluoroborate and perchlorate salts. The crystal structures of representatives of these are investigated, as is their electro-and spectro- chemical behaviour. Chapter 4 contains details of some new bis-pyridyl platinum acetylides of formula (npy)2Pt(-C≍C-R)2 (npy = 4-(5-nonylpyridine)), in which the platinum atom has mutually trans - acetylide ligands, and some polymeric species formed from these monomeric precursors and bis - acetylides containing chromophoric groups (bithiophene, terthophene and 9-fluorenone) are presented, and their optical and electronic properties investigated.
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Gillett-Kunnath, Miriam M. "Heavy alkaline earth metal amides: Synthetic and structural investigations." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2008. http://wwwlib.umi.com/cr/syr/main.

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Steinbaugh, Gregory E. "Heavy metal Ion transport utilizing natural and synthetic ionophores." The Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=osu1189785736.

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Galati, Rosa. "Synthesis, structure and properties of heavy metal pyrochlore oxides." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/173963/.

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Many interesting and often exotic magnetic phenomena have been observed over the past twenty years in the family of the heavy metal pyrochlore oxides, A2B2O6O’. In these systems, competing interactions are common and tend to emerge mainly at low temperatures. Magnetic properties are related to the contribution of d orbitals that transition metal (TM) offer and their interplay with the positive contribution coming from the cation sitting on the A site. The work described in this thesis explores the effects of chemical substitution of the A site cation on the symmetry and the properties of a number of pyrochlores containing TM of the second and third transition row, such as Ir, Ru, Mo and Os. Depending if this site is fully occupied and on the radius size the behaviour of the resulting material can change significantly. The defect pyrochlore family AOs2O6 (A = Cs, Rb, K) was studied in detail following the attention that its members attracted for having been the first materials, belonging to this subgroup, to exhibit superconducting properties [1, 2, 3] and for the diversity in their properties. In these compounds, the smaller the ionic radius of an element, the weaker is the bond to the structure. As a result, the temperature dependence of their energy becomes quite different from normal lattice vibrations and gives interesting low temperature behaviours. The effect of replacing the weak bonded potassium ions on the structures and superconducting properties of the AOs2O6 phases has also been studied. The ability to exchange the A-type in pyrochlores is well known and leads to applications for example in nuclear clean-up. Thus the ion exchange of K+ by smaller cations such as Li+ or Na+ has been investigated with the aim of synthesising compounds which cannot be obtained by direct synthesis. New defect pyrochlore materials, AA’Os2O6 (A’ = Li+, Na+) have been synthesised together with hydrated derivatives, AA’OsO6.nH2O. Parent materials were obtained by ion exchange in non-aqueous solvents under strictly dry conditions. A Ba-based osmium oxide pyrochlore, Ba(Os2O6)2.H2O was also synthesised, for the first time, from the K-osmate starting material by ion-exchange methods in aqueous medium. In this work, diffraction techniques, X- ray and neutron powder diffraction, were employed and found suitable for detecting the change in cation and anion location and general structure investigation.These structural descriptions are correlated with the measured superconducting properties and theoretical descriptions of variations in the Tc in these systems as a function of cation size and rattling.
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Dallin, Paul Howard. "Novel spectroscopic techniques applied to metal cluster compounds." Thesis, University of East Anglia, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.291953.

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Gao, Kezhong. "Interaction between peat, humic acid and aqueous heavy metal ions." Thesis, Liverpool John Moores University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337798.

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Read, Tania L. "Development of boron doped diamond electrodes for heavy metal detection." Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/83225/.

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Due to their high toxicity and prevalence in natural waters, trace heavy metals are of great concern to environmental analysts. The development of techniques with the ability to detect and quantify ppb levels of heavy metal species in the environment, without the need for sample removal and pretreatment, is therefore a key interest. Popular methods for heavy metal detection such as X-ray Fluorescence (XRF) provide easy elemental identification but lack the low detection limits desirable, whereas electrochemical methods can provide low detection limits but signal assignment in complex samples is often difficult. In addition to this, one of the biggest issues with current methods is the non-ideal nature of the environmental matrices for analysis, for example where the pH of natural waters is usually in the range 6-9; Heavy metal analysis is generally improved under acidic conditions. In this thesis a number of methods are developed with the aim of addressing these issues and moving towards in situ heavy metal detection. Electrochemistry offers an ideal platform for in situ use due to its ease of portability and low power requirements, furthermore the use of conductive boron doped diamond (BDD) electrodes provide a robust sensor resistant to both corrosion and fouling and therefore ideal for long term environmental deployment. Herein BDD dual electrode systems are developed and employed for electrochemical heavy metal detection with simultaneous control of local pH. Fabrication and electrochemical characterisation of these devices is described and compared to finite element simulation. It is shown that using such devices it is possible to control the local pH of a solution even in solutions containing up to 10 mM buffer, allowing manipulation of heavy metal (Hg and Cu) speciation and therefore improved electrochemical detection. The development of all-diamond ring disc electrodes is described; by growing BDD electrodes in insulating diamond, robust well-sealed devices where the sensor and its housing both exhibit the desirable mechanical properties of diamond can be produced. Finally, the newly developed Electrochemical XRF (EC-XRF) technique is optimised and applied to the detection of Cd and Hg.
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Morris, Leigh John. "Photochemical studies of some heavy transition metal compounds with catalytic potential." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343436.

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Ngule, Chrispus M. Jr. "In Vitro Adsorption of Heavy Metals Using Metal-Organic Frameworks." Youngstown State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1597664070125999.

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Amador, Ana Isabel Ojeda. "Synthesis of multicomponent heavy alkali metal amide systems and extensions to zirconium chemistry." Thesis, University of Strathclyde, 2016. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=27849.

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Due to the nature of the work undertaken during the course of this PhD, the results of this thesis will be broken down into three sections. The first section comprises Chapter 1 and includes an introduction on reported homometallic lithium, sodium and potassium salts of the bulky utility amines [HMDS(H), TMP(H) and DA(H)]. The second section, Chapter 2−Chapter 5, includes the achieved results obtained during the course of this PhD work based on the homometallic alkali metal building block amides. The third section involves an introduction on zirconium species and their applications in specific reactions, along with the solid and solution state studies of zirconocene species combined with alkali metal and alkali earth metal amides obtained during this work. Chapter 2 includes a deep discussion in the solid state of NaHMDS systems capturing Na halide units in the presence of a multidentate Lewis base donor ligand, taking on different structural guises depending on the denticity of the ligand of choice. This topic is currently a hot topic in organometallic chemistry, being lithium amide congeners have already been characterised. This study allows a deep examination of these structures and confirms the AM-amide/AM-halide interaction to exist in sodium chemistry as well. Chapter 3 unveils the structural chemistry of the utility base, potassium hexamethyldisilazide (KHMDS), which is explored through the incorporation of different dentate ligands into its structure. This study containing the solid state characterisation of homometallic potasium amides being a necessary preface to the bimetallic work. Having investigated the solid state structure of homometallic potasium systems, it was also deemed important to study heavier alkali metal building blocks. Thus, Chapter 4 includes the structural characterisation of specific amine adducts of the heavy alkali metal amide CsHMDS, which is recently being used in important organic transformations. Having investigated homometallic systems of heavy bulky amides, it was also deemed important to synthesise and characterise heterobimetallic species containing early and heavy alkali metal species adding to the solvent-coordination free heterobimetallic alkali metal building blocks. Due to the usage that sodium hexamethyldisilazide (NaHMDS) is gaining as a proton abstractor reagent in organic synthesis, akin to its homometallic lithium congener LiHMDS, Chapter 5 includes the synthesis and structural characterisation of three novel adducts of NaHMDS by using the chiral amine N,N,Nʹ,Nʹ-(1R,2R)-tetramethylcyclohexane-1,2-diamine [(R,R)-TMCDA] and the synthetically important tridentate ligand PMDETA allowing the development of a homologues series of [(R,R)-TMCDA]- and PMDETA-solvated NaHMDS complexes. Having successfully synthesised solvated homo- and hetero-bimetallic alkali metal salts of HMDS, the attention turned to the possibility of incorporating the tetravalent transition metal zirconium into these systems to afford homo- and hetero-bimetallic HMDS-containing zirconocene species (Chapter 6).
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Books on the topic "Heavy metal chemistry"

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group), Toxic Holocaust (Musical. Chemistry of consciousness. Upper Darby, PA: Relapse Records, 2013.

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Bhattacharyya, D. Sulfide precipitation of nickel and other heavy metals from single- and multi-metal systems. Cincinnati, OH: U.S. Environmental Protection Agency, Water Engineering Research Laboratory, 1986.

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Furini, Antonella. Plants and heavy metals. Dordrecht: Springer, 2012.

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E, Merian, and Haerdi Werner, eds. Metal compounds in environment and life, 4: Interrelation between chemistry and biology : in memoriam of Hans Wolfgang Nürnberg. Northwood, UK: Science and Technology Letters, 1992.

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service), SpringerLink (Online, ed. Cellular Effects of Heavy Metals. Dordrecht: Springer Science+Business Media B.V., 2011.

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Miśrā, Praśānta. Heavy-fermion systems. Amsterdam: Elsevier, 2008.

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G, Smith D. Heavy metals in the New Zealand aquatic environment: A review. Edited by Williamson R. B. 1947-. Wellington: National Water and Soil Conservation Authority, 1986.

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NATO Advanced Research Workshop on Fate and Control of Toxic Metals in the Atmosphere (1988 Oslo, Norway). Control and fate of atmospheric trace metals. Dordrecht: Kluwer Academic Publishers, 1989.

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NATO Advanced Research Workshop on Fate and Control of Toxic Metals in the Atmosphere (1988 Oslo, Norway). Control and fate of atmospheric trace metals: [workshop proceedings]. Dordrecht: Kluwer Academic Publishersin cooperation with NATO Scientific Affairs Division, 1989.

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Kazda, Marian. Untersuchung von Schwermetalldepositionsvorgängen aus Analysen fraktionell gesammelter Stammabflussproben und Jahresgang der Schwermetalldeposition in einem Buchenwaldökosystem des stadtnahen Wienerwaldes. Wien: VWGÖ, 1986.

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Book chapters on the topic "Heavy metal chemistry"

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Berrettoni, Mario, Angelo Mullaliu, and Marco Giorgetti. "Metal Hexacyanoferrate Absorbents for Heavy Metal Removal." In Environmental Chemistry for a Sustainable World, 171–94. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-47400-3_7.

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Katsaros, N. "The Interaction of Heavy Metal Ions with DNA." In Bioinorganic Chemistry, 219–35. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-011-0255-1_18.

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Sabir, Aneela, Rida Batool, Faizah Altaf, Muhammad Shafiq, Rafi Ullah Khan, and Karl I. Jacob. "Polymer Absorbents for Heavy Metal Removal." In Environmental Chemistry for a Sustainable World, 33–55. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-47400-3_2.

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Jayamurali, Dheepthi, Krishnapriya Madhu Varier, Wuling Liu, Jegadeesh Raman, Yaacov Ben-David, Xiangchun Shen, and Babu Gajendran. "An Overview of Heavy Metal Toxicity." In Environmental Chemistry for a Sustainable World, 323–42. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-56413-1_12.

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Hashemifard, S. A., E. Babaei, A. Khosravi, S. Ghasemi, and Z. Alihemati. "CHAPTER 9. Functional Nanocomposites for Heavy Metal Removal." In Chemistry in the Environment, 216–45. Cambridge: Royal Society of Chemistry, 2021. http://dx.doi.org/10.1039/9781839165283-00216.

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Shakya, Manisha, Eldon R. Rene, Yarlagadda V. Nancharaiah, and Piet N. L. Lens. "Fungal-Based Nanotechnology for Heavy Metal Removal." In Environmental Chemistry for a Sustainable World, 229–53. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-70166-0_7.

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Maharana, Manisha, Madhumita Manna, Moumita Sardar, and Sujit Sen. "Heavy Metal Removal by Low-Cost Adsorbents." In Environmental Chemistry for a Sustainable World, 245–72. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-47400-3_10.

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Biswas, Swarup, and Soma Nag. "Biomass-Based Absorbents for Heavy Metal Removal." In Environmental Chemistry for a Sustainable World, 351–76. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-47400-3_14.

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Nag, Soma, and Swarup Biswas. "Cellulose-Based Adsorbents for Heavy Metal Removal." In Environmental Chemistry for a Sustainable World, 113–42. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-47400-3_5.

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Sabir, Aneela, Faizah Altaf, Rida Batool, Muhammad Shafiq, Rafi Ullah Khan, and Karl I. Jacob. "Agricultural Waste Absorbents for Heavy Metal Removal." In Environmental Chemistry for a Sustainable World, 195–228. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-47400-3_8.

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Conference papers on the topic "Heavy metal chemistry"

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Safarifard, Vahid, Hossein Shayegan, Seyedeh Pegah Aledavoud, and Zahra Seyfi Hasankola. "Removal of Hg2+ heavy metal ion using a highly stable metal-organic framework." In The 23rd International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2019. http://dx.doi.org/10.3390/ecsoc-23-06507.

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Li, Ling, Yadan Guo, WenChao Yu, YueRan Ni, and XueGang Wang. "Application Progress of Bioflocculant on Treatment of Heavy Metal Wastewater." In 2016 5th International Conference on Environment, Materials, Chemistry and Power Electronics. Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/emcpe-16.2016.2.

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Ishak, Wan Mohd Faizal Bin Wan, and Siti Syazwani Bt Hamzah. "Application of seaweed as an alternative for leachate treatment of heavy metal." In 2010 International Conference on Chemistry and Chemical Engineering (ICCCE). IEEE, 2010. http://dx.doi.org/10.1109/iccceng.2010.5560448.

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Sembiring, Maria Peratenta, Jamaran Kaban, Nimpan Bangun, and Edy Saputra. "Comparison of two amine collectors as heavy metal reduction agents of mill waste in pulp and paper industry." In THE 3RD INTERNATIONAL SEMINAR ON CHEMISTRY: Green Chemistry and its Role for Sustainability. Author(s), 2018. http://dx.doi.org/10.1063/1.5082431.

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Ye, Zhuoliang, Mi Tang, and Jingyi Song XSong. "Fast removal of concentrated heavy metal ions using an alginate-poly(ethylene imine) biological adsorbent." In 2017 5th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering (ICMMCCE 2017). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/icmmcce-17.2017.82.

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Sun, X. K., Y. Huang, X. Dong, C. B. Xu, and J. Bai. "A Study on Nutrient Properties and Heavy Metal Concentrations of Waste Activated Sludge Derived from Municipal and Small Town Domestic Sewage Treatment Plants." In International Conference on Materials Chemistry and Environmental Protection 2015. Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/meep-15.2016.37.

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Wang, Xiaofei, Chaobing Deng, Guiping Xu, and Zhen Yu. "Short-term phytoremediation effect of sugarcane for contaminated farmland on heavy metal accumulation ability along the Huanjiang River in Guangxi, China." In 2017 5th International Conference on Mechatronics, Materials, Chemistry and Computer Engineering (ICMMCCE 2017). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/icmmcce-17.2017.77.

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Backman, Rainer, Mikko Hupa, Matti Hiltunen, and Kari Peltola. "Interaction of the Behavior of Lead and Zinc With Alkalis in Fluidized Bed Combustion or Gasification of Waste Derived Fuels." In 18th International Conference on Fluidized Bed Combustion. ASMEDC, 2005. http://dx.doi.org/10.1115/fbc2005-78074.

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Combustion of waste derived fuels in fluidized bed boilers may result in fly ashes containing increased amounts of lead and zinc, besides the common alkali and alkaline earth metal compounds. Although the absolute concentrations of lead and zinc may be relatively low, around 1%, in the bulk ash, they may induce unwanted effects in combustors, partly due to their significant enrichment in the fly ash. First, lead and zinc in fly ashes may lead to unwanted heavy metal emissions. Further, they can also alter the behavior of the fly ash and cause it to become sticky and possibly corrosive. This paper discusses the mechanism of volatilization of lead and zinc and stickiness properties of their fly ash compounds under different conditions, based on data from a FBC gasifier using waste fuels with significant amounts of lead and zinc. Advanced thermochemical calculations using the data bases developed at A˚bo Akademi show that both lead and zinc can form volatile compounds and thus be strongly enriched in the fly ash. They can be volatilized as elemental gases, Pb(g) and Zn(g), or they can form gaseous chlorides, PbCl2(g) and ZnCl2(g). But they can also form non-volatile oxides. Thus their behavior is very dependent on the combustion conditions, particularly on the availability of chlorine. This way there is also a direct coupling of the volatilization behavior of lead and zinc with the chemistry of the alkali metals and calcium, all of which govern the availability of chlorine. Simplified thermochemical diagrams are shown to explain the complex interaction of the lead and zinc chemistry with the rest of the flue gas and fly ash chemistry. The thermochemical data can be used to explain the practical results from full scale boilers.
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Di Gabriele, Fosca, and Lukas Kosek. "Oxygen Monitoring in the Natural Convection Loop Colonri I." In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-16483.

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Oxygen has a fundamental role for the safe operation of GEN IV reactors cooled by Heavy Liquid Metals, HLM. The use of oxygen sensors and dosing the gas in the environment are key issues for the chemistry control of HLMs, in particular when corrosion of structural materials is of concern. In fact, the oxygen concentration must be high enough to grow a protective oxide scale on the surface of the construction materials (steels) in order to prevent their dissolution in the liquid metal. On the other hand, a certain threshold must not be exceeded to prevent precipitation of oxides within the flow paths of the plant. For measuring and controlling the concentration of dissolved oxygen in liquid lead alloys, electrochemical sensors were developed and have been studied for several years. This study focuses on the work carried out in the CVR, in the convection loop COLONRI I, containing liquid Lead-Bismuth Eutectic, LBE. This vertical loop has several locations where sensors can be placed for monitoring of the local oxygen content. A research study was initiated on the aim of assessing the response and reliability of the sensors in various locations, when different gases were dosed in the liquid metal. For over 1000 hours the sensors were monitored as variables, such as oxygen content and temperature, were changed. Their response as a function of their position was qualitatively evaluated and discussed.
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Harris, Ken, and Jacqueline B. Wahl. "CM 939 Weldable® Alloy." In ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-53966.

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IN 939 alloy, developed by the International Nickel Co. in the late 1960s, is a unique 22% Cr hot corrosion resistant γ′ strengthened, cast nickel-base superalloy. It is widely used in industrial gas turbines for equiaxed vanes, vane segments and burner nozzles and is of interest to the aero turbine industry for LP and PT integral nozzles (vane rings) and high temperature turbine casings. However, IN 939 is considered difficult to weld repair without parent metal microcracking and can exhibit marginal ductility in heavy section castings. Cannon-Muskegon has developed a proprietary chemistry modified version of IN 939 alloy designated CM 939 Weldable®. Emphasis has been directed on optimizing aim chemistry and ultra high purity manufacture using CM-developed single crystal superalloy melting and raw material technology and subsequently on obtaining superior casting microstructure for improved weldability and mechanical properties. Alloy purity and heat cleanliness will be discussed, along with a simplified two-step heat treatment cycle, resulting in attractive microstructure, mechanical properties and repair weldability. Significant market interest has resulted in extensive vacuum casting experience throughout the gas turbine industry. Excellent results in terms of fluidity, casting cleanliness and minimal microporosity have been obtained without any hot tearing or hot cracking problems.
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Reports on the topic "Heavy metal chemistry"

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Schoendorff, George. United abominations: Density functional studies of heavy metal chemistry. Office of Scientific and Technical Information (OSTI), January 2012. http://dx.doi.org/10.2172/1048519.

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Marino, Maria, M. and Walter C. Ermler. Reliable Electronic Structure Calculations for Heavy Element Chemistry: Molecules Containing Actinides, Lanthanides, and Transition Metals. Office of Scientific and Technical Information (OSTI), January 2006. http://dx.doi.org/10.2172/875418.

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Moffett, James W. The Chemistry and Bioaccumulation of Copper and Other Heavy Metals By Phytoplankton in the Water Column of San Diego Harbor and Its Relationship to Ecological Assessment and Water Quality. Fort Belvoir, VA: Defense Technical Information Center, September 1999. http://dx.doi.org/10.21236/ada630292.

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Neu, Mary Patricia. Coordination chemistry of two heavy metals: I, Ligand preferences in lead(II) complexation, toward the development of therapeutic agents for lead poisoning: II, Plutonium solubility and speciation relevant to the environment. Office of Scientific and Technical Information (OSTI), November 1993. http://dx.doi.org/10.2172/10107977.

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