Quantitative separation of zinc traces from cadmium matrices by solid-phase extraction with polyurethane foam

Detalhes bibliográficos
Autor(a) principal: Jesus, Djane Santiago de
Data de Publicação: 1998
Outros Autores: Carvalho, Marcelo Souza de, Costa, Antonio Celso Spinola, Ferreira, Sergio Luis Costa
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/8205
Resumo: Texto completo: acesso restrito. p.1525–1530
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spelling Jesus, Djane Santiago deCarvalho, Marcelo Souza deCosta, Antonio Celso SpinolaFerreira, Sergio Luis CostaJesus, Djane Santiago deCarvalho, Marcelo Souza deCosta, Antonio Celso SpinolaFerreira, Sergio Luis Costa2013-01-29T14:41:55Z19980039-9140http://www.repositorio.ufba.br/ri/handle/ri/8205v. 46, n. 6Texto completo: acesso restrito. p.1525–1530A system for separation of zinc traces from large amounts of cadmium is proposed in this paper. It is based on the solid-phase extraction of the zinc in the form of thiocyanate complexes by the polyurethane foam. The following parameters were studied: effect of pH and of the thiocyanate concentration on the zinc extraction, shaking time required for quantitative extraction, amount of PU foam necessary for complete extraction, conditions for the separation of zinc from cadmium, influence of other cations and anions on the zinc sorption by PU foam, and required conditions for back extraction of zinc from the PU foam. The results show that zinc traces can be separated from large amounts of cadmium at pH 3.0±0.50, with the range of thiocyanate concentration from 0.15 to 0.20 mol l−1, and the shaking time of 5 min. The back extraction of zinc can be done by shaking it with water for 10 min. Calcium, barium, strontium, magnesium, aluminum, nickel and iron(II) are efficiently separated. Iron(III), copper(II) and cobalt(II) are extracted simultaneously with zinc, but the iron reduction with ascorbic acid and the use of citrate to mask copper(II) and cobalt(II) increase the selectivity of the zinc extraction. The anions nitrate, chloride, sulfate, acetate, thiosulphate, tartarate, oxalate, fluoride, citrate, and carbonate do not affect the zinc extraction. Phosphate and EDTA must be absent. The method proposed was applied to determine zinc in cadmium salts using 4-(2-pyridylazo)-resorcinol (PAR) as a spectrophotometric reagent. The result achieved did not show significant difference in the accuracy and precision (95% confidence level) with those obtained by ICP–AES analysis.Submitted by Suelen Reis (suelen_suzane@hotmail.com) on 2013-01-29T14:41:55Z No. of bitstreams: 1 Jesus.pdf: 157812 bytes, checksum: 54062ec3b26d1d38861d9dd32a29e3c0 (MD5)Made available in DSpace on 2013-01-29T14:41:55Z (GMT). No. of bitstreams: 1 Jesus.pdf: 157812 bytes, checksum: 54062ec3b26d1d38861d9dd32a29e3c0 (MD5) Previous issue date: 1998http://dx.doi.org/10.1016/S0039-9140(98)00025-3reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAZinc separationSolid-phase extractionPolyurethane foamCadmium matricesQuantitative separation of zinc traces from cadmium matrices by solid-phase extraction with polyurethane foamTalantainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01enginfo:eu-repo/semantics/openAccessORIGINALJesus.pdfJesus.pdfapplication/pdf157812https://repositorio.ufba.br/bitstream/ri/8205/1/Jesus.pdf54062ec3b26d1d38861d9dd32a29e3c0MD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/8205/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXTJesus.pdf.txtJesus.pdf.txtExtracted texttext/plain18854https://repositorio.ufba.br/bitstream/ri/8205/3/Jesus.pdf.txtbc2bcc8e9fb8dab8d3c7b954cf256581MD53ri/82052022-07-05 14:03:43.178oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:43Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Quantitative separation of zinc traces from cadmium matrices by solid-phase extraction with polyurethane foam
dc.title.alternative.pt_BR.fl_str_mv Talanta
title Quantitative separation of zinc traces from cadmium matrices by solid-phase extraction with polyurethane foam
spellingShingle Quantitative separation of zinc traces from cadmium matrices by solid-phase extraction with polyurethane foam
Jesus, Djane Santiago de
Zinc separation
Solid-phase extraction
Polyurethane foam
Cadmium matrices
title_short Quantitative separation of zinc traces from cadmium matrices by solid-phase extraction with polyurethane foam
title_full Quantitative separation of zinc traces from cadmium matrices by solid-phase extraction with polyurethane foam
title_fullStr Quantitative separation of zinc traces from cadmium matrices by solid-phase extraction with polyurethane foam
title_full_unstemmed Quantitative separation of zinc traces from cadmium matrices by solid-phase extraction with polyurethane foam
title_sort Quantitative separation of zinc traces from cadmium matrices by solid-phase extraction with polyurethane foam
author Jesus, Djane Santiago de
author_facet Jesus, Djane Santiago de
Carvalho, Marcelo Souza de
Costa, Antonio Celso Spinola
Ferreira, Sergio Luis Costa
author_role author
author2 Carvalho, Marcelo Souza de
Costa, Antonio Celso Spinola
Ferreira, Sergio Luis Costa
author2_role author
author
author
dc.contributor.author.fl_str_mv Jesus, Djane Santiago de
Carvalho, Marcelo Souza de
Costa, Antonio Celso Spinola
Ferreira, Sergio Luis Costa
Jesus, Djane Santiago de
Carvalho, Marcelo Souza de
Costa, Antonio Celso Spinola
Ferreira, Sergio Luis Costa
dc.subject.por.fl_str_mv Zinc separation
Solid-phase extraction
Polyurethane foam
Cadmium matrices
topic Zinc separation
Solid-phase extraction
Polyurethane foam
Cadmium matrices
description Texto completo: acesso restrito. p.1525–1530
publishDate 1998
dc.date.issued.fl_str_mv 1998
dc.date.accessioned.fl_str_mv 2013-01-29T14:41:55Z
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/8205
dc.identifier.issn.none.fl_str_mv 0039-9140
dc.identifier.number.pt_BR.fl_str_mv v. 46, n. 6
identifier_str_mv 0039-9140
v. 46, n. 6
url http://www.repositorio.ufba.br/ri/handle/ri/8205
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.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/S0039-9140(98)00025-3
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
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