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Dissertations / Theses on the topic 'Arsenic and Antimony'

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1

Perry, Meghan Rose. "Arsenic, antimony and visceral leishmaniasis." Thesis, University of Dundee, 2014. https://discovery.dundee.ac.uk/en/studentTheses/14edf50b-4943-4ec8-8556-8aaecf3a9f49.

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In Bihar state, India, the cure rate of antimonial compounds in the treatment of visceral leishmaniasis (VL) has declined from over 85% to less than 50%. This has been attributed to prolonged, widespread misuse of antimonials within the Indian private healthcare system. An alternative resistance hypothesis is that exposure to arsenic in drinking water in this region has resulted in antimony-resistant Leishmania parasites. Leishmania donovani were serially passaged in mice exposed to environmentally-relevant levels of arsenic in drinking water. Arsenic accumulation in organs of these mice was p
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2

Andrewes, Paul. "Arsenic and antimony biomethylation by Scopulariopsis brevicaulis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0009/NQ56494.pdf.

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Koch, Iris. "Arsenic and antimony species in the terrestrial environment." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ34566.pdf.

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4

Shaikh, Taimur A. "NEW DEVELOPMENTS IN CYCLIZED ARSENIC AND ANTIMONY THIOLATES." UKnowledge, 2007. http://uknowledge.uky.edu/gradschool_diss/494.

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There is a continued interest in the properties of arsenic thiolate compounds for both industrial and biological uses. Recent discoveries in the medicinal properties of such compounds have resulted in a sustained need for the synthesis of new dithiarsolane compounds for research as anti-leukemic compounds. Close analogues of the 2-halo arsenic dithiolates, namely those with an arsenic-carbon bond instead of an arsenic-halide bond, have recently been shown to have some efficacy towards leukemia cells. Based on the hydrolytic character and the active role of glutathione with arsenic in vivo, the
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5

Collins, Helen. "Halide transfer reactions of arsenic, antimony and bismuth." Thesis, University of Warwick, 1991. http://wrap.warwick.ac.uk/108064/.

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The study of Group 15 (As, Sb, Bi) halide exchange reactions. The Lewis acidity of SbCls was displayed using various metal halides. Treatment of the metal halides MCln (n=2, M=Mg, Sn; n=3, M=Sc, Y, La, Ti, In; n=4, M=Ti, Sn) with SbCls in MeCN provided antimonate(V) salts of the type [MCln-lL7-n][SbCl6] characterised by ^lgb nmr, electronic and infra-red spectroscopy and accompanying microanalytical data. Depending upon the stoichiometry of the reactants used the antimonate salts have been formulated as [MCln-xL6-(n-x)]x+[SbCl6]x‘ (where n=2, 3, 4; x=l, 2, 3). The formation of mono-, di- and t
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6

Junk, Margrit. "Material properties of copper alloys containing arsenic, antimony, and bismuth." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola&quot, 2009. http://nbn-resolving.de/urn:nbn:de:swb:105-1299566.

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This work deals with Early Bronze Age ingot torques, their composition, and material properties. The aim was to decide whether and how a choice of materials by composition or properties was possible during the Early Bronze Age. Early Bronze Age ingot torques were analysed and artefacts from several hoard finds and working stages were investigated metallographically. On the basis of these data the production technology was reconstructed. For the determination of mechanical and technological properties, reference alloys were produced and investigated. The production process was simulated by forg
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7

Francis, M. D. "Studies of low co-ordinate phosphorus, arsenic and antimony compounds." Thesis, Swansea University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.637005.

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The work described in this thesis revolves around one main theme: the chemistry of the group 15 elements phosphorus, arsenic and antimony in low co-ordinate states. The work is divided into seven chapters. Chapter one is a general introduction and briefly reviews the basic properties of the group 15 elements. It also introduces the double bond rule, the concept of low co-ordination and how low co-ordinate main group species can be stabilised using bulky substituents and/or delocalisation of electrons. Chapter two describes the synthesis and characterisation of a group 15 substituted cyclopenta
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8

Gál, Judit M. "Biogeochemistry of arsenic and antimony : risk assessment in mining areas." Thesis, University of the West of Scotland, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.430897.

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9

Rouwane, Asmaa. "Mobilité de l'Arsenic (As) et l'antimoine (Sb) d'origine géogénique dans un sol hydromorphe d'une zone humide agricole." Thesis, Limoges, 2016. http://www.theses.fr/2016LIMO0103.

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Nous avons identifié le rôle de la distribution solide et l’implication de facteurs (potentiel d’oxydoréduction, anions compétiteurs, activité biologique, matière organique (MO)) dans la mobilité de l’arsenic (As) et l’antimoine (Sb) dans un sol de zone humide (ZH) agricole. Pour cela, nous avons effectué i) un suivi de la physico–chimie de l’eau interstitielle de la ZH et ii) des incubations en batch du sol de surface de la ZH (0–20/30 cm). En parallèle, nous avons déterminé la distribution solide de As et Sb sur le sol de la ZH à différentes profondeurs (0–130 cm). Nous avons démontré que As
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10

Akagi, Susumu 1954. "Thermochemical nature of arsenic, antimony and bismuth in copper smelting matte." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276743.

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The equilibrium distribution measurements of As, Sb and Bi between molten copper and white metal and molten copper and matte were conducted to evaluate the activity coefficients of these impurity elements in copper smelting matte. The experimental results were analyzed through comparison and reconciliation with data in the literature. The following equations, based on a liquid standard state, were obtained for ᵞAs, ᵞSb and ᵞBi in white metal coexisting with copper phase at 1,150-1,200°C. Ln ᵞAs = -2.49 + 0.186 NAs; Ln ᵞSb = -1.23 + 23.5 NSb; Ln ᵞBi = 3.01 + 14.0 NBi where Ni represents the mol
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11

Cangelosi, Virginia May 1982. "Supramolecular coordination chemistry of phosphorus, arsenic, antimony, and bismuth with organothiolates." Thesis, University of Oregon, 2010. http://hdl.handle.net/1794/11301.

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xxiv, 203 p. : ill. (some col.) A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number.<br>The ever-expanding field of supramolecular chemistry has recently incorporated use of the main group ions. This dissertation presents a supramolecular approach to the coordination chemistry of the Group 15 elements, with a special emphasis on arsenic (As). Arsenic is ubiquitous in our environment, contaminates the drinking water of large human populations, and is a worldwide health concern. Arsenic's legendary toxicity is thought t
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12

Yersel, Müşerref Eroğlu Ahmet E. thesis advisor. "Separation of trace antimony and arsenic prior to hydride generation atomic absortion spectrometric determination/." [s.l.]: [s.n.], 2005. http://library.iyte.edu.tr/tezler/master/kimya/T000392.pdf.

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13

Campbell, Andrew Thomas. "Some aspects of the aquatic and analytical chemistry of antimony and arsenic." Thesis, University of Southampton, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357182.

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14

Flynn, H. C. "Biosensor assessment of arsenic and antimony bioavailability in mining soils and sediments." Thesis, University of Aberdeen, 2003. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU180551.

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Mining and smelting activities are a major source of arsenic and antimony contamination in the environment. These contaminants have been neglected when such sites are investigated, hence there is a need for their environmental impacts to be assessed. An understanding of bioavailability underpins any such assessment. This measure can only be inferred from traditional chemical techniques and the use of novel bioavailability surrogate measures. This study used a suite of three lux-marked bacterial biosensors as complimentary tools to assess metalloid bioavailability and toxicity in soils contamin
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15

Martinez, Marino Juan. "Evaluation of gallium arsenic(x) antimony(1-x)/indium(y) aluminum(1-y) arsenicp-channel HIGFETs for complementary technologies." Diss., The University of Arizona, 1993. http://hdl.handle.net/10150/186496.

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This work shows the viability of p-channel GaAsₓSb₁₋ₓ/In(y)Al(1-y)As HIGFETs for III-V compound-based complementary technologies to compete with silicon CMOS for specialized applications. Monte Carlo simulation was used to establish that even for the most extreme cases of alloy scattering GaAsₓSb₁₋ₓ on InP has a higher bulk hole mobility than GaAs. Process development demonstrated that H₂O:H₂O₂:H₃PO₄:L-tartaric acid-based etchant solutions provide a reliable etchant with a selectivity of approximately 2:1 of GaAsₓSb₁₋ₓ over In(y)Al(1-y)As. Process development also showed that Ti/Au was the mos
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16

Cai, Jie. "Identification and characterization of a chromosomal arsenic/antimony inducible operon in gram-negative bacteria." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0001/NQ44376.pdf.

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17

Chalmers, Brian Alexander. "A synthetic, spectroscopic and structural examination of phosphorus, arsenic and antimony peri-substituted acenaphthenes." Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/7061.

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Donor–acceptor complexes have been known for over a century and enjoy a long list of applications in chemistry. In this thesis, the dative interaction between phosphorus and its two heavier congeners, arsenic and antimony, are explored. Utilising peri-substitution atoms can be forced in close proximity to one another, resulting in a repulsive (nonbonding) interaction or an attractive (bonding) interaction. Hence, peri-substitution can be used to support traditionally ephemeral species. A range of phosphorus, arsenic and antimony containing peri-substituted compounds were synthesised and charac
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18

Seyedi, Seyed Mojtaba. "Engineered iron oxide nanoparticle-polymer composites for the removal of dissolved arsenic and antimony." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2017. https://ro.ecu.edu.au/theses/2038.

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Dissolved metalloids, such as arsenic (As), antimony (Sb) and boron (B), are often found in contaminated surface waters or groundwater. Their removal is essential for protecting the water environment. This MEngSci research project investigated the use of magnetite (Fe3O4) nanoparticle – polymethylmethacrylate (PMMA) composites, as a reusable adsorbent toremove dissolved As andSb. Comparative experiments were carried out to examine the effectiveness ofcommercial magnetite nanoparticles, lab synthesized nanoparticles, and the composites of synthesed Fe3O4nanoparticle-PMMA, for adsorbing As (III)
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19

Marmor, Joy Susan. "A mud lac amp transcriptional fusion identifies a gene induced by arsenic and antimony salts /." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60502.

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In order to identify and characterize genes whose transcription is affected by arsenic and antimony, random lacZ fusions in the E. coli chromosome were constructed using the Mud I transposable phage. One clone was isolated that contained a lacZ transcriptional fusion induced by arsenic, antimony, and their associated salts. When cells were subjected to DNA-damaging agents such as mitomycin C and sodium dichromate, a low level of induction resulted. In addition, a marked increase in arsenic sensitivity was observed in the fusion clone as compared to the parent strain presumably due to the inser
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20

Urbánková, Kristýna. "Multikomponentní extrakce a prekoncentrace mikrokoncentrací As, Sb, Se a Te na modifikovaný silikagel, stanovení na ICP-AES (ICP-MS) a aplikace na vzorky vod." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2008. http://www.nusl.cz/ntk/nusl-233280.

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The determination of inorganic speciations of arsenic, antimony, selenium and tellurium in natural waters demands often separation and preconcentration. Solid phase extraction is a very effective method for these purposes. In this paper the separation and preconcentration of these microelements is realised on the basis of modified silica Separon SGX C18, SGX C8, SGX CN, SGX NH2, SGX Phenyl and strongly basic anion Exchanger SGX AX. The sorption was provided in the presence of cationic surfactants such as benzyldimethyl dodecylammonium bromide (Ajatin), benzyldimethyltetradecylammonium chloride
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Jirak, Jason Edward. "Enhancement of minority carrier lifetime in low quality silicon by ion implantation of arsenic and antimony." [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1469707.

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22

Lesley, Michael Patrick. "The fluxes and fates of arsenic, selenium, and antimony from coal fired power plants to rivers." Thesis, Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04082004-180307/unrestricted/lesley%5fmichael%5fp%5f200312%5fms.pdf.

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23

Ebengue, Atega Philippe Lionel. "Vers une distinction des contributions anthropiques et naturelles dans les contaminations en arsenic et antimoine des eaux souterraines dans le cadre d’un diagnostic territorial : application au bassin cévenol, France." Electronic Thesis or Diss., IMT Mines Alès, 2022. http://www.theses.fr/2022EMAL0002.

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Les eaux souterraines assurent une proportion importante de l’approvisionnement eneau des territoires. La surveillance des réserves et de la qualité de ces ressourcesconstitue donc un enjeu majeur, en lien avec les Objectifs de Développement Durabledes Nations Unies. En rapport avec ces objectifs, la présente thèse traite de lacaractérisation de la qualité des masses d’eau souterraines sur un territoire ayantconnu un passé minier. Elle vise le développement d‘une méthodologie permettantd'estimer les contributions respectives du fond géochimique naturel et des apportsanthropiques, à l’enrichiss
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Junk, Margrit. "Material properties of copper alloys containing arsenic, antimony, and bismuth the material of Early Bronze Age ingot torques /." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=968751180.

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Borges, Elisa Moura. "Metodologia para determinação de arsênio, antimônio e bismuto por espectrometria de emissão óptica com fonte de plasma acoplado indutivamente (ICPOES) e geração de hidretos aplicada à rochas /." Rio Claro : [s.n.], 2005. http://hdl.handle.net/11449/92858.

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Orientador: Antonio José Ranalli Nardy<br>Banca: Maria Margarita Torres Moreno<br>Banca: Amauri Antonio Menegário<br>Resumo: No presente trabalho são descritas as etapas para o desenvolvimento de uma metodologia para determinação de arsênio, antimônio e bismuto em materiais geológicos, utilizando gerador de hidretos acoplado ao ICPOES, proporcionando a determinação dos elementos de interesse em baixas concentrações. O método é sensível, por isso está sujeito a interferências, como as causadas por elementos presentes na matriz. Foram realizadas otimizações nos parâmetros operacionais e analític
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Tavora, F. J. "Lithogeochemistry and surficial redistribution of arsenic, antimony, bismuth, selenium and tellurium, associated with mineral deposits in subtropical areas of Brazil." Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/46760.

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Qi, Pengfei [Verfasser], Thomas [Akademischer Betreuer] Pichler, and Andrea [Akademischer Betreuer] Koschinsky. "Adsorption behavior of arsenic and antimony onto ferrihydrite under competitive conditions / Pengfei Qi. Betreuer: Thomas Pichler. Gutachter: Thomas Pichler ; Andrea Koschinsky." Bremen : Staats- und Universitätsbibliothek Bremen, 2016. http://d-nb.info/1084169118/34.

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Bolanz, Ralph Michael [Verfasser], Juraj [Akademischer Betreuer] Majzlan, Georg [Akademischer Betreuer] Büchel, and Gerhard [Akademischer Betreuer] Heide. "Arsenic and antimony in the environment : release and possible immobilization mechanisms / Ralph Michael Bolanz. Gutachter: Juraj Majzlan ; Georg Büchel ; Gerhard Heide." Jena : Thüringer Universitäts- und Landesbibliothek Jena, 2014. http://d-nb.info/1047579081/34.

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Besold, Johannes [Verfasser], and Britta [Akademischer Betreuer] Planer-Friedrich. "Influences of Reduced Sulfur on Arsenic and Antimony Mobility and Binding to Natural Organic Matter / Johannes Besold ; Betreuer: Britta Planer-Friedrich." Bayreuth : Universität Bayreuth, 2020. http://d-nb.info/1218596236/34.

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30

Jana, Ulrike. "Etude des interactions entre la plante Arabidopsis thaliana (L.) Heynh et le ver de terre Aporrectodea caliginosa (Savigny) : application à la phytoremédiation de l'arsenic et de l'antimoine." Phd thesis, Université Paris-Est, 2009. http://tel.archives-ouvertes.fr/tel-00504377.

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L'arsenic et l'antimoine bien que n'étant pas recensés parmi les polluants majeurs de l'environnement sont souvent retrouvés associés à d'autres contaminants. En France, et plus particulièrement dans la région Auvergne, de nombreux sites miniers où s'effectuait l'extraction de l'antimoine sont désormais à l'abandon. Pouvant présenter des risques pour les populations avoisinantes, leur réhabilitation est donc une mission d'intérêt public. L'idée de ce travail de doctorat est de tester l'effet d'un catalyseur : le ver de terre sur l'efficacité des processus de phytoremédiation. En tant qu'" ingé
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McDonald, Lauren. "Wipe Sampling Methodologies to Assess Exposures to Metals in Urban Canadian Homes: 1 Cadmium, Lead, Yttrium 2 Antimony, Arsenic, Chromium, Copper, Nickel." Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28588.

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Wipe sampling is a means of monitoring exposures to contaminants which has been used extensively for assessment of lead (Pb) in housedust in the U.S. This thesis reports the first baseline wipe dataset for urban Canadian homes, for Pb and other metal(loid)s including: arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), nickel (Ni), and antimony (Sb). The literature review covers sampling methods, health effects, and sources. The digestion procedure ASTM 1644 is the accepted HNO3 hotplate protocol for determination of Pb in wipes. However in this study, HF was added to enhance extraction ef
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Borges, Elisa Moura [UNESP]. "Metodologia para determinação de arsênio, antimônio e bismuto por espectrometria de emissão óptica com fonte de plasma acoplado indutivamente (ICPOES) e geração de hidretos aplicada à rochas." Universidade Estadual Paulista (UNESP), 2005. http://hdl.handle.net/11449/92858.

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Made available in DSpace on 2014-06-11T19:26:13Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-05-06Bitstream added on 2014-06-13T19:33:35Z : No. of bitstreams: 1 borges_em_me_rcla.pdf: 583445 bytes, checksum: a94bcee1df858747cf63f7c61d62429e (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>No presente trabalho são descritas as etapas para o desenvolvimento de uma metodologia para determinação de arsênio, antimônio e bismuto em materiais geológicos, utilizando gerador de hidretos acoplado
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Furdíková, Zuzana. "Studium generování, záchytu a atomizace těkavých hydridů pro metody atomové spektrometrie." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2009. http://www.nusl.cz/ntk/nusl-233290.

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Interference effects of co-generated hydrides of arsenic, antimony, bismuth and selenium on trapping behavior of selenium or antimony hydrides (analytes) within iridium modified, transversely heated graphite tube atomizer (THGA) was investigated. A twin-channel hydride generation system was used for independent separate generation and introduction of analyte and interferent hydrides, i.e. in simultaneous and/or sequential analyte-interferent and interferent-analyte mode of operation. Influence of the analyte and modifier mass, interferent amount, trapping temperature and composition of the gas
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Bott, Raymond C. "The Synthesis and Characterisation of Group 15 Coordination Complexes involving a-Hydroxy Carboxylic Acid Ligands." Thesis, Queensland University of Technology, 1993. https://eprints.qut.edu.au/226578/1/T%28S%29%2032_Bott_1993.pdf.

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This thesis investigates the chemistry of the group 15 elements, arsenic(III), antimony(III), and bismuth(III) together with the a-hydroxy carboxylic acids, (2R,3R)-( + )-tartaric acid and citric acid in the formation of stable coordination complexes. Arsenic and antimony form 1:1 dimeric cage anions [Mz(tartrate)z]2-which are subsequently charge stabilised through monovalent cations. The coordination about the arsenic and antimony is pseudo trigonal bipyramidal because of a stereochemically active lone pair of electrons. However, the metallic bismuth member does not form the dimeric cages nor
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Florea, Ana-Maria. "Toxicity of alkylated derivatives of arsenic, antimony and tin in vitro cellular uptake, cytotoxicity, genotoxic effects, perturbation of Ca2+ homeostasis, and cell death /." [S.l.] : [s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=973570474.

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Dippold, Angela C. "Detailed Geochemical Investigation of the Mineralogic Associations of Arsenic and Antimony Within the Avon Park Formation, Central Florida: Implications for Aquifer Storage and Recovery." [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0002992.

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Florea, Ana M. [Verfasser]. "Toxicity of Alkylated Derivatives of Arsenic, Antimony, and Tin in vitro : Cellular Uptake, Cytotoxicity, Genotoxic Effects, Perturbation of Ca2+ Homeostasis, and Cell Death / Ana M Florea." Aachen : Shaker, 2005. http://d-nb.info/118161998X/34.

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Krejčí, Pavel. "Studium miniaturních zařízení pro kolekci hydridotvorných prvků v atomové spektroskopii." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2011. http://www.nusl.cz/ntk/nusl-233325.

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Capability of a prototype of miniature collection device based on a strip of the molybdenum foil for collecting hydride forming elements (As, Se, Sb and Bi) was studied. The device was combined with a miniature hydrogen diffusion flame for detection by atomic absorption spectrometry. The conditions for trapping and subsequent vaporization of analytes of interest were optimized. A twin-channel hydride generation system was used for study of mutual interference effects of co-generated hydride forming elements. The influence of modification of the molybdenum surface with noble metals - Rh, Pt and
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Haffert, Laura, and n/a. "Metalloid mobility at historic mine and industrial processing sites in the South Island of New Zealand." University of Otago. Department of Geology, 2009. http://adt.otago.ac.nz./public/adt-NZDU20090921.144328.

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Rocks of the South Island of New Zealand are locally enriched in metalloids, namely arsenic (As), antimony (Sb) and boron (B). Elevated levels of As and Sb can be found in sulphide minerals mostly in association with mesothermal gold deposits, whereas B enrichment occurs in marine influenced coal deposits. The mobility of these metalloids is important because they can be toxic at relatively low levels (e.g. for humans >0.01 mg/L of As). Their mobilisation occurs naturally from background weathering of the bedrock. However, mining and processing of coal and gold deposits, New Zealand's most eco
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FONTANELLA, MARIA CHIARA. "APPLICAZIONE DI DIFFERENTI TECNICHE PER LA DETERMINAZIONE DELL’ARSENICO NELLA CATENA ALIMENTARE UMANA: DALL’ACQUA DI FALDA ALLA TAVOLA." Doctoral thesis, Università Cattolica del Sacro Cuore, 2013. http://hdl.handle.net/10280/1958.

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Lo scopo della tesi è di caratterizzare i rischi per la salute umana, che derivano dall’inquinamento delle acque (acque sotterranee) e dal cibo (riso) tramite l’applicazione e lo sviluppo di nuove tecniche analitiche. La tecnica “diffusive gradients in thin films (DGT)” con resina a base di ferrihydrite, è stata studiata per l'accumulo delle forme inorganiche (As(III) e As(V)) e organiche (DMA(V) e MMA(V)) di Arsenico in matrici acquose. I DGT sono stati applicati su campioni di acque sotterranee, raccolti in sei diverse città del Nord Italia, dove la concentrazione di As è molto alta. Antimon
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FONTANELLA, MARIA CHIARA. "APPLICAZIONE DI DIFFERENTI TECNICHE PER LA DETERMINAZIONE DELL’ARSENICO NELLA CATENA ALIMENTARE UMANA: DALL’ACQUA DI FALDA ALLA TAVOLA." Doctoral thesis, Università Cattolica del Sacro Cuore, 2013. http://hdl.handle.net/10280/1958.

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Lo scopo della tesi è di caratterizzare i rischi per la salute umana, che derivano dall’inquinamento delle acque (acque sotterranee) e dal cibo (riso) tramite l’applicazione e lo sviluppo di nuove tecniche analitiche. La tecnica “diffusive gradients in thin films (DGT)” con resina a base di ferrihydrite, è stata studiata per l'accumulo delle forme inorganiche (As(III) e As(V)) e organiche (DMA(V) e MMA(V)) di Arsenico in matrici acquose. I DGT sono stati applicati su campioni di acque sotterranee, raccolti in sei diverse città del Nord Italia, dove la concentrazione di As è molto alta. Antimon
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42

Runtti, H. (Hanna). "Utilisation of industrial by-products in water treatment:carbon-and silicate-based materials as adsorbents for metals and sulphate removal." Doctoral thesis, Oulun yliopisto, 2016. http://urn.fi/urn:isbn:9789526212630.

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Abstract Pollutant (such as metals and sulphate) contamination exists in the wastewaters of many industries, including mining operations, metal plating facilities, and tanneries. Adsorption is one of the most commonly used processes for the removal of pollutants from waters and wastewaters due to its high efficiency and simple operation. Activated carbon is the most frequently used adsorbent material, although its high cost inhibits its widespread use in wastewater treatment. Therefore, there is a need to develop other adsorbents from alternative inexpensive raw materials such as locally avail
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Luukkonen, T. (Tero). "New adsorption and oxidation-based approaches for water and wastewater treatment:studies regarding organic peracids, boiler-water treatment, and geopolymers." Doctoral thesis, Oulun yliopisto, 2016. http://urn.fi/urn:isbn:9789526210797.

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Abstract This thesis examines three different areas of water treatment technology: the application of organic peracids in wastewater treatment; the removal of organic residues from boiler make-up water; and the use of geopolymers as sorbents. The main advantages of peracids as alternative wastewater disinfectants are their effective antimicrobial properties and high oxidation power, as well the absence of harmful disinfection by-products after their use. Performic, peracetic and perpropionic acids were compared in laboratory-scale disinfection, oxidation and corrosion experiments. From the tec
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44

Boiron, Marie-Christine. "MINERALISATIONS A Au, As, Sb, ALTERATIONS HYDROTHERMALES ET FLUIDES ASSOCIES DANS LE BASSIN DE VILLERANGES (COMBRAILLES, MASSIF CENTRAL FRANCAIS)." Poitiers, 1987. http://www.theses.fr/1987POIT2278.

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Trois evenements d'intensite, d'importance et d'interet metallogenique differents sont reconnus: 1) l'ensemble des series viseennes est affecte d'abord par une alteration a chlorite-albite-anatase. 2) les rejeux tardifs de la zone de cisaillement marche-combrailles provoquent d'intenses fracturations auxquelles sont associees d'importantes circulations de fluides hydrothermaux. Plusieurs episodes successifs d'alteration et de mineralisation sont enregistres dans la zone des farges. 3) des reouvertures tardives du systeme permettent des circulations de fluides responsables de la cristallisation
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45

McCabe, S. "Novel methods for the determination of arsenic, antimoney and selenium in single cell protein." Thesis, University of Strathclyde, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381347.

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46

Schütt, Thomas. "Halogen-, Azid- und Koordinationsverbindungen des Arsens und Antimons." [S.l.] : [s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=963037811.

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47

Schütt, Thomas. "Halogen-, Azid- und Koordinationsverbindungen des Arsens und Antimons." Diss., lmu, 2001. http://nbn-resolving.de/urn:nbn:de:bvb:19-3668.

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48

SILVA, LARISSA de S. "Avaliação da concentração de metais e elementos terras raras em amostras de sedimentos dos reservatórios dos sistemas Billings e Guarapiranga." reponame:Repositório Institucional do IPEN, 2017. http://repositorio.ipen.br:8080/xmlui/handle/123456789/28040.

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Submitted by Pedro Silva Filho (pfsilva@ipen.br) on 2017-11-22T17:15:11Z No. of bitstreams: 0<br>Made available in DSpace on 2017-11-22T17:15:11Z (GMT). No. of bitstreams: 0<br>O excessivo processo de urbanização da Região Metropolitana de São Paulo resultou na perda das características naturais dos seus cursos d\'água ocasionando profundas alterações nos regimes de vazão e de qualidade. O objetivo desse estudo foi avaliar a concentração de metais tóxicos, os semi-metais As, Sb e Se e os elementos terras raras, presentes em amostras de sedimento superficiais coletadas nos Reservatórios Billin
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49

Casiot, Corinne. "Développement de techniques analytiques couplées (HPLC-ICP-MS et EC-ICP-MS) pour la spéciation de métalloi͏̈des (arsenic, sélénium, antimoine et tellure)." Pau, 1999. http://www.theses.fr/1999PAUU3026.

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Les éléments traces et en particulier les métalloïdes tels que l'arsenic, le sélénium, l'antimoine et le tellure peuvent se présenter dans l'environnement sous différentes formes chimiques, qui conditionnent leur toxicité, leur biodisponibilité et leur capacité à migrer. Ce travail présente le développement de deux techniques analytiques de spéciation multiélémentaire, associant une technique séparative (chromatographie liquide, électrophorèse capillaire) et un détecteur spécifique et très sensible, l'ICP-MS. La chromatographie d'échange d'anions couplée à l'ICP-MS a permis la séparation simul
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Souza, Antonio Gouveia de. "Termoquimica de quelatos de dialquilditiocarbamatos envolvendo fosforo, arsenio, antimonio e bismuto trivalente : alguns aspectos termoquimicos de alcoxidos e tris (dietilamido) de arsenio (III)." [s.n.], 1986. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250061.

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Orientador : Claudio Airoldi<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-07-16T23:23:38Z (GMT). No. of bitstreams: 1 Souza_AntonioGouveiade_D.pdf: 8178280 bytes, checksum: 485b7bc6eca8d66bec5718f62bf68b92 (MD5) Previous issue date: 1986<br>Doutorado
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