ICP–AES determination of small amounts of zinc in copper-base alloys after separation by adsorption of the zinc–TAN complex on Sep Pak C18 cartridges

Detalhes bibliográficos
Autor(a) principal: Teixeira, Leonardo Sena Gomes
Data de Publicação: 1998
Outros Autores: Reis, José Oscar N., Costa, Antonio Celso Spinola, Ferreira, Sergio Luis Costa, Korn, Maria das Graças Andrade, Andrade, Jailson Bittencourt de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/8204
Resumo: Texto completo: acesso restrito. p.1279–1283
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spelling Teixeira, Leonardo Sena GomesReis, José Oscar N.Costa, Antonio Celso SpinolaFerreira, Sergio Luis CostaKorn, Maria das Graças AndradeAndrade, Jailson Bittencourt deTeixeira, Leonardo Sena GomesReis, José Oscar N.Costa, Antonio Celso SpinolaFerreira, Sergio Luis CostaKorn, Maria das Graças AndradeAndrade, Jailson Bittencourt de2013-01-29T14:34:49Z19980039-9140http://www.repositorio.ufba.br/ri/handle/ri/8204v. 46, n. 6Texto completo: acesso restrito. p.1279–1283The use of ICP/AES for the determination of zinc, in low concentration levels, in matrices containing high levels of copper is difficult because copper interferes in the zinc main emission wavelength (213.856 nm). In the present work, a separation of zinc from copper matrices was possible, using the reaction of zinc(II) cation with 1-(2-tiazolylazo)-2-naphthol (TAN), in the pH range of 6.5–8.0, resulting in a stable red complex. Copper also reacts with TAN but its interference was avoided by the addition of ascorbic acid and thiosulphate in the reaction medium. In this way, the aqueous solution was passed through a SEP PAK C18 cartridge, in which the zinc(II)–TAN complex was quantitatively retained, but it did not occur with copper which passes through the cartridge, as [Cu2(S2O3)2]2−, with the aqueous solution. The cartridge was washed with water and the complex eluted with ethanol. Then, the alcohol was evaporated and the complex decomposed by nitric acid. It results in both zinc pre-concentration and separation from copper. The zinc quantification was carried out by ICP/AES at 213.856 nm. The relative standard deviations, for ten different aliquots, were 5.7% and the average recovery found for zinc was 96%, even when the concentration ratio Cu/Zn was up to 500/1 (mg l−1:mg l−1). Other metals, like nickel, for example, can react with TAN in the same way as zinc but they do not interfere in the emission wavelength 213.856 nm.Submitted by Suelen Reis (suelen_suzane@hotmail.com) on 2013-01-29T14:34:49Z No. of bitstreams: 1 Teixeira,.pdf: 243185 bytes, checksum: fa8fd4bc3723ca8ee2ad2bf564bd9bbd (MD5)Made available in DSpace on 2013-01-29T14:34:49Z (GMT). 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dc.title.pt_BR.fl_str_mv ICP–AES determination of small amounts of zinc in copper-base alloys after separation by adsorption of the zinc–TAN complex on Sep Pak C18 cartridges
dc.title.alternative.pt_BR.fl_str_mv Talanta
title ICP–AES determination of small amounts of zinc in copper-base alloys after separation by adsorption of the zinc–TAN complex on Sep Pak C18 cartridges
spellingShingle ICP–AES determination of small amounts of zinc in copper-base alloys after separation by adsorption of the zinc–TAN complex on Sep Pak C18 cartridges
Teixeira, Leonardo Sena Gomes
ICP/AES
Zinc
Copper-base alloys
title_short ICP–AES determination of small amounts of zinc in copper-base alloys after separation by adsorption of the zinc–TAN complex on Sep Pak C18 cartridges
title_full ICP–AES determination of small amounts of zinc in copper-base alloys after separation by adsorption of the zinc–TAN complex on Sep Pak C18 cartridges
title_fullStr ICP–AES determination of small amounts of zinc in copper-base alloys after separation by adsorption of the zinc–TAN complex on Sep Pak C18 cartridges
title_full_unstemmed ICP–AES determination of small amounts of zinc in copper-base alloys after separation by adsorption of the zinc–TAN complex on Sep Pak C18 cartridges
title_sort ICP–AES determination of small amounts of zinc in copper-base alloys after separation by adsorption of the zinc–TAN complex on Sep Pak C18 cartridges
author Teixeira, Leonardo Sena Gomes
author_facet Teixeira, Leonardo Sena Gomes
Reis, José Oscar N.
Costa, Antonio Celso Spinola
Ferreira, Sergio Luis Costa
Korn, Maria das Graças Andrade
Andrade, Jailson Bittencourt de
author_role author
author2 Reis, José Oscar N.
Costa, Antonio Celso Spinola
Ferreira, Sergio Luis Costa
Korn, Maria das Graças Andrade
Andrade, Jailson Bittencourt de
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Teixeira, Leonardo Sena Gomes
Reis, José Oscar N.
Costa, Antonio Celso Spinola
Ferreira, Sergio Luis Costa
Korn, Maria das Graças Andrade
Andrade, Jailson Bittencourt de
Teixeira, Leonardo Sena Gomes
Reis, José Oscar N.
Costa, Antonio Celso Spinola
Ferreira, Sergio Luis Costa
Korn, Maria das Graças Andrade
Andrade, Jailson Bittencourt de
dc.subject.por.fl_str_mv ICP/AES
Zinc
Copper-base alloys
topic ICP/AES
Zinc
Copper-base alloys
description Texto completo: acesso restrito. p.1279–1283
publishDate 1998
dc.date.issued.fl_str_mv 1998
dc.date.accessioned.fl_str_mv 2013-01-29T14:34:49Z
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/8204
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/8204
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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