Determination of Iron in Alkaline Salts by ICP-AES Using 1-(2-Thiazolylazo)-p-Cresol (TAC) for Preconcentration and Separation

Detalhes bibliográficos
Autor(a) principal: Ferreira, Sergio Luis Costa
Data de Publicação: 1997
Outros Autores: Queiroz, Adriana Santana, Assis, Júlio César Rosa, Korn, Maria das Graças Andrade, Costa, Antonio Celso Spinola
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/4953
Resumo: p. 621-624.
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spelling Ferreira, Sergio Luis CostaQueiroz, Adriana SantanaAssis, Júlio César RosaKorn, Maria das Graças AndradeCosta, Antonio Celso SpinolaFerreira, Sergio Luis CostaQueiroz, Adriana SantanaAssis, Júlio César RosaKorn, Maria das Graças AndradeCosta, Antonio Celso Spinola2011-12-21T12:04:11Z2011-12-21T12:04:11Z19970103-5053http://www.repositorio.ufba.br/ri/handle/ri/4953v. 8, n. 6.p. 621-624.O presente trabalho descreve o uso de 1-(2-thiazolylazo)-p-cresol (TAC) para separação, preconcentração e determinação de traços de ferro (ng g-1) em sais alcalinos usando a técnica ICP-AES. O método proposto é baseado na extração líquido-líquido do complexo formado entre o cátion ferro(III) e o 1-(2-thiazolylazo)-p-cresol (TAC). Foram estudados parâmetros tais como: quantidade de TAC, efeito de pH, influência do solvente orgânico, mineralização da fase orgânica e re-extração. Os resultados demonstraram que o complexo ferro(III)-TAC, formado na faixa de pH de 4,0 a 10,0, pode ser quantitativamente extraído de soluções salinas, usando como solvente extractor álcool isoamílico, tetracloreto de carbono, clorofórmio ou metil isobutil cetona. A solução para determinação de ferro pode ser obtida por uma re-extração usando soluções de ácido clorídrico 1 mol/L ou ácido nítrico 1 mol/L ou também por uma mineralização da fase orgânica, com uma evaporação do solvente orgânico e digestão do resíduo com ácido nítrico concentrado. O procedimento foi usado para determinação de ferro em amostras de vários sais alcalinos. A técnica da adição padrão foi aplicada e as recuperações obtidas revelaram que o procedimento proposto tem uma boa exatidão.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2011-12-21T12:04:11Z No. of bitstreams: 1 a09v08n6.pdf: 18284 bytes, checksum: 9f54b461e20b2ae668794b0d2f046886 (MD5)Made available in DSpace on 2011-12-21T12:04:11Z (GMT). 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dc.title.pt_BR.fl_str_mv Determination of Iron in Alkaline Salts by ICP-AES Using 1-(2-Thiazolylazo)-p-Cresol (TAC) for Preconcentration and Separation
dc.title.alternative.pt_BR.fl_str_mv Journal of the Brazilian Chemical Society
title Determination of Iron in Alkaline Salts by ICP-AES Using 1-(2-Thiazolylazo)-p-Cresol (TAC) for Preconcentration and Separation
spellingShingle Determination of Iron in Alkaline Salts by ICP-AES Using 1-(2-Thiazolylazo)-p-Cresol (TAC) for Preconcentration and Separation
Ferreira, Sergio Luis Costa
Iron determination
ICP-AES
Saline salts
title_short Determination of Iron in Alkaline Salts by ICP-AES Using 1-(2-Thiazolylazo)-p-Cresol (TAC) for Preconcentration and Separation
title_full Determination of Iron in Alkaline Salts by ICP-AES Using 1-(2-Thiazolylazo)-p-Cresol (TAC) for Preconcentration and Separation
title_fullStr Determination of Iron in Alkaline Salts by ICP-AES Using 1-(2-Thiazolylazo)-p-Cresol (TAC) for Preconcentration and Separation
title_full_unstemmed Determination of Iron in Alkaline Salts by ICP-AES Using 1-(2-Thiazolylazo)-p-Cresol (TAC) for Preconcentration and Separation
title_sort Determination of Iron in Alkaline Salts by ICP-AES Using 1-(2-Thiazolylazo)-p-Cresol (TAC) for Preconcentration and Separation
author Ferreira, Sergio Luis Costa
author_facet Ferreira, Sergio Luis Costa
Queiroz, Adriana Santana
Assis, Júlio César Rosa
Korn, Maria das Graças Andrade
Costa, Antonio Celso Spinola
author_role author
author2 Queiroz, Adriana Santana
Assis, Júlio César Rosa
Korn, Maria das Graças Andrade
Costa, Antonio Celso Spinola
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Ferreira, Sergio Luis Costa
Queiroz, Adriana Santana
Assis, Júlio César Rosa
Korn, Maria das Graças Andrade
Costa, Antonio Celso Spinola
Ferreira, Sergio Luis Costa
Queiroz, Adriana Santana
Assis, Júlio César Rosa
Korn, Maria das Graças Andrade
Costa, Antonio Celso Spinola
dc.subject.por.fl_str_mv Iron determination
ICP-AES
Saline salts
topic Iron determination
ICP-AES
Saline salts
description p. 621-624.
publishDate 1997
dc.date.issued.fl_str_mv 1997
dc.date.accessioned.fl_str_mv 2011-12-21T12:04:11Z
dc.date.available.fl_str_mv 2011-12-21T12:04:11Z
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/4953
dc.identifier.issn.none.fl_str_mv 0103-5053
dc.identifier.number.pt_BR.fl_str_mv v. 8, n. 6.
identifier_str_mv 0103-5053
v. 8, n. 6.
url http://www.repositorio.ufba.br/ri/handle/ri/4953
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
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