Separation and Pre-concentration of Cadmium, Copper, Lead, Nickel and Zinc by Solid-Liquid Extraction of their Cocrystallized Naphthalene Dithizone Chelate in Saline Matrices

Detalhes bibliográficos
Autor(a) principal: Costa, Antonio Celso Spinola
Data de Publicação: 2002
Outros Autores: Lopes, Leila, Korn, Maria das Graças Andrade, Portela, Jicarla Gusmão
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/4966
Resumo: p. 674-678,Set.Oct
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spelling Costa, Antonio Celso SpinolaLopes, LeilaKorn, Maria das Graças AndradePortela, Jicarla GusmãoCosta, Antonio Celso SpinolaLopes, LeilaKorn, Maria das Graças AndradePortela, Jicarla Gusmão2011-12-21T16:31:01Z2011-12-21T16:31:01Z20020103-5053http://www.repositorio.ufba.br/ri/handle/ri/4966v. 13, n. 5.p. 674-678,Set.OctUm procedimento em batelada é proposto para separação e pré-concentração de cádmio, chumbo, níquel e zinco em amostras de salmoura. O método baseia-se na adsorção dos íons metálicos sobre a fase sólida composta de ditizona co-cristalizada com naftaleno microcristalino, na faixa de pH de 8,5 — 9,1. Ácido nítrico é utilizado para re-extrair os cátions da fase sólida, os quais são determinados por ICP-OES. Vários parâmetros, tais como efeito do pH, do tempo de agitação e da quantidade da fase sólida foram estudados sistematicamente visando otimizar as condições para a determinação de quantidades traço de Cd, Cu, Pb, Ni e Zn em amostras sintéticas de salmoura. Os limites de detecção obtidos, expressos em mg L-1, foram: 44 (Zn), 11 (Ni), 30 (Cd), 47 (Pb) e 11 (Cu). A precisão do procedimento foi estabelecida pela medida de 10 replicatas com 250 μg L-1 de cada íon e os desvios padrão relativos foram de 2,71 % (Cd), 2,15 % (Cu), 1,53 % (Pb), 2,47 % (Ni) e 2,78 % (Zn). A exatidão do procedimento foi confirmada pelo método de adição de analitos e os resultados obtidos indicaram recuperação quantitativa (≥ 95 %).Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2011-12-21T16:31:01Z No. of bitstreams: 1 12824.pdf: 301923 bytes, checksum: 7150240e8b81e675dcf24cefd1311124 (MD5)Made available in DSpace on 2011-12-21T16:31:01Z (GMT). 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dc.title.pt_BR.fl_str_mv Separation and Pre-concentration of Cadmium, Copper, Lead, Nickel and Zinc by Solid-Liquid Extraction of their Cocrystallized Naphthalene Dithizone Chelate in Saline Matrices
dc.title.alternative.pt_BR.fl_str_mv Journal of the Brazilian Chemical Society
title Separation and Pre-concentration of Cadmium, Copper, Lead, Nickel and Zinc by Solid-Liquid Extraction of their Cocrystallized Naphthalene Dithizone Chelate in Saline Matrices
spellingShingle Separation and Pre-concentration of Cadmium, Copper, Lead, Nickel and Zinc by Solid-Liquid Extraction of their Cocrystallized Naphthalene Dithizone Chelate in Saline Matrices
Costa, Antonio Celso Spinola
Preconcentration
Solid-liquid extraction
Naphthalene
Dithizone
Highly saline matrices
title_short Separation and Pre-concentration of Cadmium, Copper, Lead, Nickel and Zinc by Solid-Liquid Extraction of their Cocrystallized Naphthalene Dithizone Chelate in Saline Matrices
title_full Separation and Pre-concentration of Cadmium, Copper, Lead, Nickel and Zinc by Solid-Liquid Extraction of their Cocrystallized Naphthalene Dithizone Chelate in Saline Matrices
title_fullStr Separation and Pre-concentration of Cadmium, Copper, Lead, Nickel and Zinc by Solid-Liquid Extraction of their Cocrystallized Naphthalene Dithizone Chelate in Saline Matrices
title_full_unstemmed Separation and Pre-concentration of Cadmium, Copper, Lead, Nickel and Zinc by Solid-Liquid Extraction of their Cocrystallized Naphthalene Dithizone Chelate in Saline Matrices
title_sort Separation and Pre-concentration of Cadmium, Copper, Lead, Nickel and Zinc by Solid-Liquid Extraction of their Cocrystallized Naphthalene Dithizone Chelate in Saline Matrices
author Costa, Antonio Celso Spinola
author_facet Costa, Antonio Celso Spinola
Lopes, Leila
Korn, Maria das Graças Andrade
Portela, Jicarla Gusmão
author_role author
author2 Lopes, Leila
Korn, Maria das Graças Andrade
Portela, Jicarla Gusmão
author2_role author
author
author
dc.contributor.author.fl_str_mv Costa, Antonio Celso Spinola
Lopes, Leila
Korn, Maria das Graças Andrade
Portela, Jicarla Gusmão
Costa, Antonio Celso Spinola
Lopes, Leila
Korn, Maria das Graças Andrade
Portela, Jicarla Gusmão
dc.subject.por.fl_str_mv Preconcentration
Solid-liquid extraction
Naphthalene
Dithizone
Highly saline matrices
topic Preconcentration
Solid-liquid extraction
Naphthalene
Dithizone
Highly saline matrices
description p. 674-678,Set.Oct
publishDate 2002
dc.date.issued.fl_str_mv 2002
dc.date.accessioned.fl_str_mv 2011-12-21T16:31:01Z
dc.date.available.fl_str_mv 2011-12-21T16:31:01Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/4966
dc.identifier.issn.none.fl_str_mv 0103-5053
dc.identifier.number.pt_BR.fl_str_mv v. 13, n. 5.
identifier_str_mv 0103-5053
v. 13, n. 5.
url http://www.repositorio.ufba.br/ri/handle/ri/4966
dc.language.iso.fl_str_mv eng
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dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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