Evaluation of diffusive gradients in thin films technique (DGT) for measuring Al, Cd, Co, Cu, Mn, Ni, and Zn in Amazonian rivers

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dc.contributor.authorMarques Yabuki, Lauren Nozomi [UNESP]
dc.contributor.authorColaco, Camila Destro [UNESP]
dc.contributor.authorMenegario, Amauri Antonio [UNESP]
dc.contributor.authorDomingos, Roberto Naves [UNESP]
dc.contributor.authorKiang, Chang Hung [UNESP]
dc.contributor.authorPascoaloto, Domitila
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionInstituto Nacional de Pesquisas da Amazônia (INPA)
dc.date.accessioned2014-12-03T13:11:26Z
dc.date.available2014-12-03T13:11:26Z
dc.date.issued2014-02-01
dc.description.abstractStudies concerning the lability and bioavailability of trace metals have played a prominent role in the search for contamination of water resources. This work describes the first application yet of the diffusive gradients in thin films technique (DGT) to the determination of the fraction of free plus labile metals in waters from the Amazon Basin. Due to the complexity of the use of DGT for samples with low ionic strength and high organic matter content (characteristic of Amazonian rivers), a new analytical procedure was developed. The method is based on the determinations of apparent diffusion coefficients (D-ap) in the laboratory, by performing deployments in samples collected in the corresponding sites of study. The D-ap thereby determined is then used for in situ measurements. The suitability of the proposed approach for determination of labile Al, Cd, Co, Cu, Mn, Ni, and Zn in the Amazon River and Rio Negro (English: Black River) was evaluated. Except for Co, Mn (in a deployment at Rio Negro), Ni and Zn (in a deployment at Amazon River), labile in situ measurements were lower or similar to dissolved concentrations, indicating suitability of the proposed approach.en
dc.description.affiliationUniv Estadual Paulista UNESP, IGCE, Programa Posgrad Geociencias & Meio Ambiente, BR-13506900 Sao Paulo, Brazil
dc.description.affiliationUniv Estadual Paulista UNESP, CEA, BR-13506900 Sao Paulo, Brazil
dc.description.affiliationUniv Estadual Paulista UNESP, IGCE, Lab Estudos Bacias LEBAC, BR-13506900 Sao Paulo, Brazil
dc.description.affiliationINPA, BR-69067375 Manaus, Amazonas, Brazil
dc.description.affiliationUnespUniv Estadual Paulista UNESP, IGCE, Programa Posgrad Geociencias & Meio Ambiente, BR-13506900 Sao Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista UNESP, CEA, BR-13506900 Sao Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista UNESP, IGCE, Lab Estudos Bacias LEBAC, BR-13506900 Sao Paulo, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent961-969
dc.identifierhttp://dx.doi.org/10.1007/s10661-013-3430-x
dc.identifier.citationEnvironmental Monitoring And Assessment. Dordrecht: Springer, v. 186, n. 2, p. 961-969, 2014.
dc.identifier.doi10.1007/s10661-013-3430-x
dc.identifier.issn0167-6369
dc.identifier.lattes1257794767301021
dc.identifier.lattes1989662459244838
dc.identifier.urihttp://hdl.handle.net/11449/113138
dc.identifier.wosWOS:000329647300025
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofEnvironmental Monitoring and Assessment
dc.relation.ispartofjcr1.804
dc.relation.ispartofsjr0,589
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectDGTen
dc.subjectAmazon Basinen
dc.subjectLabilityen
dc.subjectTrace metalsen
dc.titleEvaluation of diffusive gradients in thin films technique (DGT) for measuring Al, Cd, Co, Cu, Mn, Ni, and Zn in Amazonian riversen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
unesp.author.lattes1257794767301021
unesp.author.lattes1989662459244838[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Geociências e Ciências Exatas, Rio Claropt

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