The determination of molybdenum in water and biological samples by graphite furnace atomic spectrometry after polyurethane foam column separation and preconcentration

Detalhes bibliográficos
Autor(a) principal: Ferreira, Sergio Luis Costa
Data de Publicação: 2003
Outros Autores: Santos, Hilda Costa dos, Campos, Reinaldo C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/8323
Resumo: Texto completo: acesso restrito. p. 789-795
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spelling Ferreira, Sergio Luis CostaSantos, Hilda Costa dosCampos, Reinaldo C.Ferreira, Sergio Luis CostaSantos, Hilda Costa dosCampos, Reinaldo C.2013-02-01T14:31:32Z20030039-9140http://www.repositorio.ufba.br/ri/handle/ri/8323v. 61, n. 6Texto completo: acesso restrito. p. 789-795A system for molybdenum separation and enrichment aiming its determination in water and biological samples by graphite furnace atomic absorption spectrometry (GFAAS) is proposed. The procedure is based on the sorption of the molybdenum (VI) thiocyanate complex onto a mini-column packed with polyurethane foam (PUF). The elution is accomplished by a 3.0 mol l 1 nitric acid solution. Flow variables were optimized and an enrichment factor of 10 as well as a limit of detection (LOD) (3 s) of 0.08 mg l 1 in the sample solution were achieved. The coefficient of variation showed values of 3 and 2% for molybdenum solutions of 2.0 and 10.0 mg l 1, respectively. The accuracy of the method was confirmed by the good concordance between found and certified values in the analysis of certified reference materials (CRMs) (CASS-3 Nearshore Seawater, NIST 1547 Peach Leaves, NIST 1515 Apple Leaves and NIST 1572 Citrus Leaves). The procedure was also applied for the molybdenum determination in mineral waters as well as in produced water samples. The results obtained for the mineral water samples compared well with those obtained by ICPMS. Concerning the produced water samples, in spite of their large salinity, recoveries of 90 to 120% at the 1 mg l 1 were observedSubmitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2013-02-01T14:31:32Z No. of bitstreams: 1 1-s2.0-S0039914003003783-main.pdf: 236870 bytes, checksum: 6039ed2d7b832343ff95c53389fc0827 (MD5)Made available in DSpace on 2013-02-01T14:31:32Z (GMT). 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dc.title.pt_BR.fl_str_mv The determination of molybdenum in water and biological samples by graphite furnace atomic spectrometry after polyurethane foam column separation and preconcentration
dc.title.alternative.pt_BR.fl_str_mv Talanta
title The determination of molybdenum in water and biological samples by graphite furnace atomic spectrometry after polyurethane foam column separation and preconcentration
spellingShingle The determination of molybdenum in water and biological samples by graphite furnace atomic spectrometry after polyurethane foam column separation and preconcentration
Ferreira, Sergio Luis Costa
Molybdenum
Graphite furnace
Polyurethane foam
title_short The determination of molybdenum in water and biological samples by graphite furnace atomic spectrometry after polyurethane foam column separation and preconcentration
title_full The determination of molybdenum in water and biological samples by graphite furnace atomic spectrometry after polyurethane foam column separation and preconcentration
title_fullStr The determination of molybdenum in water and biological samples by graphite furnace atomic spectrometry after polyurethane foam column separation and preconcentration
title_full_unstemmed The determination of molybdenum in water and biological samples by graphite furnace atomic spectrometry after polyurethane foam column separation and preconcentration
title_sort The determination of molybdenum in water and biological samples by graphite furnace atomic spectrometry after polyurethane foam column separation and preconcentration
author Ferreira, Sergio Luis Costa
author_facet Ferreira, Sergio Luis Costa
Santos, Hilda Costa dos
Campos, Reinaldo C.
author_role author
author2 Santos, Hilda Costa dos
Campos, Reinaldo C.
author2_role author
author
dc.contributor.author.fl_str_mv Ferreira, Sergio Luis Costa
Santos, Hilda Costa dos
Campos, Reinaldo C.
Ferreira, Sergio Luis Costa
Santos, Hilda Costa dos
Campos, Reinaldo C.
dc.subject.por.fl_str_mv Molybdenum
Graphite furnace
Polyurethane foam
topic Molybdenum
Graphite furnace
Polyurethane foam
description Texto completo: acesso restrito. p. 789-795
publishDate 2003
dc.date.issued.fl_str_mv 2003
dc.date.accessioned.fl_str_mv 2013-02-01T14:31:32Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/8323
dc.identifier.issn.none.fl_str_mv 0039-9140
dc.identifier.number.pt_BR.fl_str_mv v. 61, n. 6
identifier_str_mv 0039-9140
v. 61, n. 6
url http://www.repositorio.ufba.br/ri/handle/ri/8323
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elservier
publisher.none.fl_str_mv Elservier
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/S0039-9140(03)00378-3
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
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institution UFBA
reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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