A hydride generation flow system for determination of arsenic and selenium by total reflection X-ray fluorescence spectrometry

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dc.contributor.authorGomes, ACF
dc.contributor.authorMenegario, A. A.
dc.contributor.authorPellegrinotti, D. C.
dc.contributor.authorGine, M. F.
dc.contributor.authorNascimento, V. F.
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:27:37Z
dc.date.available2014-05-20T15:27:37Z
dc.date.issued2004-09-20
dc.description.abstractIn this work, a preconcentration and separation system based on continuous flow hydride generation is proposed to improve the determination of As and Se by total reflection X-ray fluorescence spectrometry. The generated hydrides are continuously separated from the liquid phase and collected in a chamber containing 250 mul of HCI/HNO3 1:1 (v/v) solution. Hydride generation conditions and collection of the hydrides were evaluated. Under optimised conditions, enrichment factors of 55 for As and 82 for Se were attained. Detection limits of 0.3 mug l(-1) for As and Se were obtained when 20 ml of sample was used. Analysis of a natural water standard reference material from National Institute of Standard and Technology (SRM-1640) was in agreement with the certified values at the 95% confidence level. (C) 2004 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv São Paulo, Ctr Energia Nucl Agr, BR-13400970 Piracicaba, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, Ctr Estudos Ambientais, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Ctr Estudos Ambientais, BR-13506900 Rio Claro, SP, Brazil
dc.format.extent1481-1484
dc.identifierhttp://dx.doi.org/10.1016/j.sab.2004.06.007
dc.identifier.citationSpectrochimica Acta Part B-atomic Spectroscopy. Oxford: Pergamon-Elsevier B.V., v. 59, n. 9, p. 1481-1484, 2004.
dc.identifier.doi10.1016/j.sab.2004.06.007
dc.identifier.issn0584-8547
dc.identifier.urihttp://hdl.handle.net/11449/37572
dc.identifier.wosWOS:000224589900016
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofSpectrochimica Acta Part B-atomic Spectroscopy
dc.relation.ispartofjcr2.854
dc.relation.ispartofsjr0,960
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectTXRFpt
dc.subjecthydride generationpt
dc.subjectflow systempt
dc.subjectpreconcentrationpt
dc.titleA hydride generation flow system for determination of arsenic and selenium by total reflection X-ray fluorescence spectrometryen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.orcid0000-0002-1111-9758[2]

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Rio Claro - CEA - Centro de Estudos Ambientais