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Tesis sobre el tema "Heavy metals"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 25 de julio de 2025

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1

Sekhula, Koena Sinah. "Heavy metal ion resistance and bioremediation capacities of bacterial strains isolated from an Antimony Mine." Thesis, University of Limpopo, 2005. http://hdl.handle.net/10386/139.

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Thesis (M.Sc.) -- University of Limpopo, 2005<br>Six aerobic bacterial strains [GM 10(1), GM 10 (2), GM 14, GM 15, GM 16 and GM 17] were isolated from an antimony mine in South Africa. Heavy-metal resistance and biosorptive capacities of the isolates were studied. Three of the isolates (GM 15, GM 16 and GM 17) showed different degrees of resistance to antimony and arsenic oxyanions in TYG media. The most resistant isolate GM 16 showed 90 % resistance, followed by GM 17 showing 60 % resistance and GM 15 was least resistant showing 58 % resistance to 80 mM arsenate (AsO4 3-). GM 15 also

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2

Oltmanns, Jan. "Biosensors for heavy metals." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/22854.

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Heavy metals from natural and man-made sources can be a great threat to human and animal life. As small inorganic ions they are challenging to detect, usually requiring expensive and complicated machinery. Several heavy metals can accumulate in the human body, leading to long term toxic effects on the nervous system. Many bacteria have developed strategies to survive in heavy metal rich environments. One of these strategies is a bacterial operon containing genes for detoxification mechanisms controlled by a promoter and a regulatory protein. In this work some of these promoter-protein pairs, P

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3

Dey, Gopal Ch. "Application of functionalised chelating resins for selective sorption of metal ions with special reference to heavy metals." Thesis, University of North Bengal, 2011. http://hdl.handle.net/123456789/1391.

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4

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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5

Sörme, Louise. "Urban heavy metals stocks and flows /." Linköping : Univ. : Vatten i natur och samhälle, Institutionen för tema [distributör], 2003. http://www.bibl.liu.se/liupubl/disp/disp2003/arts270s.pdf.

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6

Beckett, C. L. "Heavy metals in Severn Estuary ecosystems." Thesis, University of Bristol, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373733.

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7

Xu, Yuping. "Interactions of heavy metals with minerals /." The Ohio State University, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487856076412928.

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8

Limson, Janice. "Aging, sex, death (and heavy metals)." Rhodes University, 2011. http://hdl.handle.net/10962/d1019732.

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9

Wang, Jin 1954. "Extraction of heavy metals with supercritical carbon dioxide : a novel approach to heavy metal analysis and decontamination." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=39890.

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The technique of extraction with supercritical carbon dioxide (SC-CO$ sb2$), which is now used routinely for the recovery of non-polar analytes from a variety of liquid and semipermeable solid media, was extended to the efficient extraction of metal ions. Measurements of the solubilities in SC-CO$ sb2$ corroborated the hypothesis that the non-polar character of a series of tetraalkylammoniun dialkyldithiocarbamates ion pairs was influenced (i) primarily by the chain length of the alkyl substituent(s) on the carbamate nitrogen and (ii) to a lesser extent, by the chain length of the alkyl substi

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10

Mullins, M. "Subcellular localization of metals in metal tolerant higher plants." Thesis, University of Liverpool, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384378.

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11

Cheung, Kai-him Matthew, and 張啟謙. "Bioremediation of toxic metals." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/194562.

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Traditional remediation techniques in removing toxic metal contaminants using physical and chemical methods are expensive and may cause other forms of damage to the environment, comparing with these techniques bioremediation can serve as an inexpensive, effective and environmental friendly remediation method. This thesis mainly discusses different bioremediation techniques and identifies possible areas in Hong Kong for bioremediation and suggests bioremediation methods for each potential area. Bioremediation of toxic metals is the use of microorganisms, plants, or even larger sized organisms t

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12

Kraemer, Ute. "Nickel hyperaccumulation in the genus Alyssum L." Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318487.

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13

Al-Asheh, Sameer. "Sorption of heavy metals by biological materials." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq26101.pdf.

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14

Warren, Robert Stephen. "Heavy metals in urban street surface sediments." Thesis, Middlesex University, 1987. http://eprints.mdx.ac.uk/13575/.

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A literature survey has been undertaken of the sources, levels and effects of heavy metal pollution in the urban street environment. Established techniques for the determination of heavy metal levels in urban dusts have been reviewed, and appropriate methods selected for use in the research project. Spatial and temporal variations of Cd, Cu, Pb and Zn in street dust have been investigated at a number sites. Metal loadings showed stronger spatial variation than concentrations with the greatest metal loadings occurring in the gutters and kerbsides. The results have been assessed in terms of surf

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15

Agarwal, P. "Magnetism and superconductivity in heavy-fermion metals." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.595373.

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One of the key challenges of contemporary condensed matter physics is to understand how the large variety of states of matter arises in electron systems. While the basic force is in all cases the electrostatic Coulomb interaction, the variety of states of matter spans an impressively broad spectrum, ranging from insulators to superconductors, and including a variety of magnetic phases. In recent years, a series of new, emergent phenomena have added more exotic states to the list of known behaviour in metallic systems, and some of them defy the standard descriptions of 'normal' metals, known as

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16

Mowll, J. L. "The responses of fungi to heavy metals." Thesis, University of Dundee, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234237.

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17

Mansi, Sadoniben E. "Heavy metals and their ecotoxicology in estuaries." Thesis, University of Essex, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426006.

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18

Md, Noh Mohd Fairulnizal. "Electrochemical sensors development for toxic heavy metals." Thesis, Cranfield University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.422358.

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19

Wainaina, Steven. "Effect of heavy metals on syngas fermentation." Thesis, Högskolan i Borås, Akademin för textil, teknik och ekonomi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-10203.

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The goal of this work was to establish the suitable and limiting concentrations of Zn, Cu and Mn compounds during syngas fermentation. The results showed that cells encased in polyvinylidene difluoride (PVDF) membranes had a faster accumulation of methane in reactors containing fermentation medium dosed with 5 mg/L of each heavy metal compared to free cells. It was also revealed that total inhibition of biohydrogen production occurred in medium containing 5 mg/L Cu, 30 mg/L Zn and 140 mg/L Mn while the most suitable metal concentration level was 0.1 mg/L Cu, 0.6 mg/L and 2.8 mg/L Mn. In additi

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20

Santos, Pedro Deyrieux Centeno Ogando. "Heavy metals removal in dual media filters." Master's thesis, Faculdade de Ciências e Tecnologia, 2012. http://hdl.handle.net/10362/8251.

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Dissertação para obtenção do Grau de Mestre em Engenharia do Ambiente – Perfil de Engenharia Sanitária<br>The purpose of this study was to investigate physicochemical mechanisms for the removal of heavy metals from the effluent of Harnaschpolder’s WWTP Pilot Installation in the South of Netherlands. This effluent is partially submitted to tertiary treatment in a water reuse pilot which aims the production of water for two different end‑uses: crop irrigation in greenhouses and surface‑type water. Tertiary filters were mounted and started up at the reuse pilot and specific concentrations of

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21

Kirk, Charles A. C. "Geochemical fractionation of heavy metals in soils." Thesis, University of Bristol, 1995. http://hdl.handle.net/1983/2153b6ab-75d5-4b4f-b648-f3ff6795b4d9.

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22

Kwan, Sai-ping. "Heavy metals in Hong Kong rabbitfish (Siganus canaliculatus) /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B20667759.

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23

Gomez, Katherine Emma. "Phytoremediation of contaminated soil from a petroleum refinery land treatment unit." Cincinnati, Ohio : University of Cincinnati, 2001. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=ucin1006197725.

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24

Malbrue, Courtney Michelle. "An Examination of Heavy Metal Vaporization from the Combustion of Black Liquor." Thesis, Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/13949.

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The research focuses on the fate of heavy metals and their emissions from pulp mill recovery boilers. Heavy metals are extremely toxic and cause adverse effects on human health. There is limited information about factors affecting heavy metal vaporization from recovery boilers, in which spent pulping liquors, (also called black liquor) is burnt. The heavy metals are present in trace quantities in black liquor. They are emitted in the air as submicron particles, and their amount of emission depends on the input of metals into the recovery boiler, volatilization of metals in the boiler and th

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25

Chow, Edith Chemistry Faculty of Science UNSW. "Peptide modified electrochemical sensors for the detection of heavy metal ions." Awarded by:University of New South Wales. Chemistry, 2006. http://handle.unsw.edu.au/1959.4/23354.

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In this research, the determination of trace concentrations of heavy metal ions was investigated using peptide modified electrochemical biosensors. The biosensor has several advantages over atomic absorption spectroscopy and inductively coupled plasma mass spectrometry by offering greater simplicity in use and the possibility of determining the bioavailability of heavy metals. Oligopeptides were modified on the electrode surface through the spontaneous self-assembly of thiols on gold. Firstly, 3-mercaptopropionic acid (MPA) was self-assembled onto the gold surface followed by activation of the

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26

Claus, Sonia Carmel, University of Western Sydney, of Science Technology and Environment College, and of Science Food and Horticulture School. "Heavy metals in biota from temperate Australian estuaries." THESIS_CSTE_SFH_Claus_S.xml, 2003. http://handle.uws.edu.au:8081/1959.7/503.

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The detection of anthropogenic impacts in our estuaries has become a critical social, political and scientific concern in recent years. Work has focussed on the effects of these impacts on the spatial and temporal patterns of biotic assemblages and searched for bioindicators and biomarkers of pollutants that may act as early warning signs. The estuaries in temperate Southeastern Australia have a diversity of biotic assemblages living in the soft sediment. One of the most abundant macroinvertebrates is the little studies mussel, Xenostrobus securi that is found living with an assemblage of bent

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27

Nkqenkqa, Vuyiseka. "Metal and microbial contamination of agricultural soil and the Veldwachters River, Stellenbosch, South Africa." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2423.

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Thesis (MTech (Environmental Health))--Cape Peninsula University of Technology, 2017.<br>Surface water is used as a source of water supply in many countries, including South Africa. One of the sources of surface water pollution is leachate and surface runoff from landfills. In agricultural soils, the landfill runoff and leachate deteriorate the quality and affect the fertility of soil. The entry of metals and microorganisms from landfill leachate to adjacent environments is through surface runoff due to rainfall. Adverse effects on human- and environmental health triggers a need to monitor and

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28

Barros, Arielle Muniz de. "Bioadsorção e dessorção dos íons 'Cd POT. 2+', 'Cu POT. 2+' , 'Ni POT. 2+', 'Pb POT. 2+' e 'Zn POT. 2+' pela macrófita aquáica Azolla pinnata." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266685.

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Orientadores: Meuris Gurgel Carlos da Silva, Sirlei Jaiana Kleinübing<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química<br>Made available in DSpace on 2018-08-21T10:55:13Z (GMT). No. of bitstreams: 1 Barros_ArielleMunizde_M.pdf: 2403867 bytes, checksum: 9d034ece43d77bf5fa23832c79a98b8c (MD5) Previous issue date: 2012<br>Resumo: Pesquisas no campo da tecnologia têm buscado avaliar técnicas e/ou processos econômicos e eficientes para o tratamento de efluentes que contenham metal pesado. Atualmente a bioadsorção vem se apresentando como uma boa alter

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29

Lindström, Martin. "Predictive Modelling of Heavy Metals in Urban Lakes." Doctoral thesis, Uppsala University, Department of Earth Sciences, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-530.

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<p>Heavy metals are well-known environmental pollutants. In this thesis predictive models for heavy metals in urban lakes are discussed and new models presented. The base of predictive modelling is empirical data from field investigations of many ecosystems covering a wide range of ecosystem characteristics. Predictive models focus on the variabilities among lakes and processes controlling the major metal fluxes. </p><p>Sediment and water data for this study were collected from ten small lakes in the Stockholm area, the Eastern parts of Lake Mälaren, the innermost areas of the Stockholm archip

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30

Lindström, Martin. "Predictive modelling of heavy metals in urban lakes /." Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2000. http://publications.uu.se/theses/91-554-4854-2/.

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31

Claus, Sonia Carmel. "Heavy metals in biota from temperate Australian estuaries /." View thesis, 2003. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20051013.092820/index.html.

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Thesis (Ph.D.) -- University of Western Sydney, 2003.<br>"Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy at the University of Western Sydney Hawlesbury" Bibliography : leaves 245-278.

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32

Li, Litong. "Heavy metals removal from wastewater by peat absorption /." Connect to online version, 1996. http://hdl.handle.net/1989/3561.

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33

Rose, C. J. S. "The uptake of heavy metals by three seaweeds." Thesis, Swansea University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.638712.

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34

Khastoo, D. "Uptake and toxicity of heavy metals in insects." Thesis, Swansea University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.637787.

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The effects of some heavy metals at different stages of food chains are examined. The uptake of Zn or Cd by Australian white wheat, <i>Triticum aestivum</i>, was investigated and this wheat fed to the herbivore, <i>Schistocerca gregaris</i>. The organs of these insects were then examined for accumulation. Accumulation occurred in all organs examined but was higher in the epidermis and mid-gut. <i>Nasonia vitripennis</i> (Hymenoptera) was used as a carnivore. The effects of Zn, Cd, Cu and Hg on the longevity and survival of this insect were examined together with total accumulation at three dif

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35

Kwan, Sai-ping, and 關世平. "Heavy metals in Hong Kong rabbitfish (Siganus canaliculatus)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31221038.

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36

Jones, J. M. "Magnetic minerals and heavy metals in ombrotrophic peat." Thesis, University of Liverpool, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372671.

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37

Muhammad, Nur. "Removal of heavy metals by slow sand filtration." Thesis, Loughborough University, 1998. https://dspace.lboro.ac.uk/2134/6981.

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Slow sand filters (SSFs) are probably the most effective, simplest and least expensive water treatment process. Micro-organisms and other particulate materials are effectively removed by SSFs. Considerable development has been done on SSFs with respect to particle removal, but only a few works have been reported in the context of the removal of heavy metals which are a severely toxic pollutant of surface waters. No extensive laboratory or pilot studies have been carried out to determine the performance or the mechanisms of removal of heavy metals by SSFs. This research is concerned with an exp

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38

Rome, Jacqueline Louise de. "Biosorption of heavy metals by fungi and yeast." Thesis, University of Dundee, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338281.

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39

Tompkins, Joanne Deborah. "The uptake of heavy metals into human phagocytes." Thesis, University of Southampton, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243177.

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40

PINO, GABRIELA ALEJANDRA HUAMAN. "BIOSSORPTION OF HEAVY METALS ON GREEN COCONUT POWDER." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=7596@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>A poluição por metais pesados vem se tornando um sério problema ambiental. O uso de biomassas como material sorvente para a destoxificação de efluentes industria is contendo metais aparece como uma alternativa promissora às tecnologias existentes. O objetivo desta dissertação foi determinar a capacidade de adsorção da casca de coco (Cocos nucifera) para diferentes metais pesados. No processo de biossorção foram ava liados o pH da solução, a concentração inicial dos íons metálicos, o tamanho de partícula e a cinética do pro

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41

Chatterjee, Sabyasachi. "Calcite and Calcium Oxalate Sequestration of Heavy Metals." Diss., Temple University Libraries, 2009. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/50093.

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Engineering<br>Ph.D.<br>Heavy metals like cadmium, lead and zinc pose a significant threat to human health and environment. Several factors such as pH, EH, organic matter and clay content of the soil affect the bioavailability of such heavy metals in the environment. The presence of several naturally occurring minerals such as calcite (calcium carbonate, CaCO3) and calcium oxalate (CaC2O4.) in the environment significantly influence the fate and transport of some of the heavy metal cations. Sequestration of heavy metals such as cadmium (Cd) and zinc (Zn) from solution by calcite has been clear

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42

Paul, Uchenna Prince. "Fluorescence Detectors for Proteins and Toxic Heavy Metals." Diss., CLICK HERE for online access, 2004. http://contentdm.lib.byu.edu/ETD/image/etd416.pdf.

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43

Mathur, Neil David. "Quantum order in heavy fermion systems." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388485.

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44

Strelko, Vladimir. "Selective removal of heavy metals using novel active carbons." Thesis, Loughborough University, 1999. https://dspace.lboro.ac.uk/2134/7182.

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Porous carbonaceous adsorbent materials possessing weakly acidic surface functional groups have been evaluated for the selective removal of heavy metals from aqueous solutions. Active carbons derived from both agricultural products (KAU carbons) and polymeric resin (CKC carbon) have been oxidised by hot air or nitric acid to produce samples with different degrees of surface oxidation. A novel phosphorus-containing carbonaceous sorbent (PGP-P) has been prepared by pyrolysis of phosphorylated phenol-formaldehyde resin. Surface modifications have been carried out to introduce various acidic funct

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45

Le, Huquet Jeannette Anne. "Heavy metal-regulated gene expression in flowering plants." Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.241491.

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46

Fang, Bin. "Remobilisation of heavy metals from sediments using aminopolycarboxlyic acids." Connect to full text, 2005. http://hdl.handle.net/2123/630.

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Thesis (Ph. D.)--University of Sydney, 2005.<br>Title from title screen (viewed 21 May 2008). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the Centre for Heavy Metals Research, School of Chemistry, School of Chemistry. Includes bibliographical references. Also available in print form.

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47

Zogaj, Muhamet [Verfasser]. "Heavy metals and plant uptake of metals in agricultural soils of Kosovo / Muhamet Zogaj." Gießen : Universitätsbibliothek, 2018. http://d-nb.info/1151046779/34.

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48

Tomazelli, Andréa Cristina. ""Estudo comparativo das concentrações de cádmio, chumbo e mercúrio em seis bacias hidrográficas do Estado de São Paulo"." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/59/59139/tde-15032005-173014/.

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Concentrações de cádmio (Cd), chumbo (Pb) e mercúrio (Hg) foram determinadas em amostras de água (teores dissolvidos e particulados), sedimento de fundo, peixes e bivalves, coletados em seis bacias hidrográficas do Estado de São Paulo: Alto Paranapanema, Peixe, Aguapeí, São José dos Dourados, Mogi-Guaçu e Piracicaba, as quais apresentam diferentes características quanto ao uso e ocupação da terra. Dentre estas bacias, as dos rios Piracicaba e Mogi-Guaçu apresentam maiores densidades demográficas e industrialização, o que gera, conseqüentemente, maior degradação da qualidade das águas, enfatiza

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49

Feeney, Rosemary. "Development, demonstration, and validation of microfabricated iridium and gold arrays for the field screening of heavy metals in ground water /." Thesis, Connect to Dissertations & Theses @ Tufts University, 2002.

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Thesis (Ph.D )--Tufts University, 2002.<br>Adviser: Samuel P. Kounaves. Submitted to the Dept. of Chemistry. Includes bibliographical references (leaves 104-111). Access restricted to members of the Tufts University community. Also available via the World Wide Web;

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50

O'Reilly, Wiese Siobhan Bernadette. "An investigation into historical metal accumulation in the sediments of the Thames estuary and in two eroding Essex salt marshes." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.362463.

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