Multivariate optimization and validation of an analytical method for the determination of cadmium in wines employing ET AAS

Detalhes bibliográficos
Autor(a) principal: Ferreira, Sergio Luis Costa
Data de Publicação: 2009
Outros Autores: Jesus, Robson M. de, Matos, Geraldo D., Andrade, Jailson Bittencourt de, Bruns, Roy Edward, Santos, Walter Nei Lopes dos, Cavalcante, Dannuza Dias, Vale, Maria G. R., Dessuy, Morgana B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/4957
Resumo: p. 788-794.
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spelling Ferreira, Sergio Luis CostaJesus, Robson M. deMatos, Geraldo D.Andrade, Jailson Bittencourt deBruns, Roy EdwardSantos, Walter Nei Lopes dosCavalcante, Dannuza DiasVale, Maria G. R.Dessuy, Morgana B.Ferreira, Sergio Luis CostaJesus, Robson M. deMatos, Geraldo D.Andrade, Jailson Bittencourt deBruns, Roy EdwardSantos, Walter Nei Lopes dosCavalcante, Dannuza DiasVale, Maria G. R.Dessuy, Morgana B.2011-12-21T12:51:55Z2011-12-21T12:51:55Z20090103-5053http://www.repositorio.ufba.br/ri/handle/ri/4957v. 20, n. 4.p. 788-794.O presente trabalho descreve a otimização e validação de um método para determinação direta de cádmio em amostras de vinho por espectrometria de absorção atômica com atomização eletrotérmica (ET AAS). A otimização foi realizada empregando um planejamento fatorial completo de 2 níveis, incluindo os fatores: tempo (10 s) e temperatura de pirólise (600 ºC), temperatura de atomização (1300 ºC) e massa de modificador (15 µg). Sob as condições otimizadas, foi encontrada uma massa característica de 0,7 pg, limite de detecção e quantificação de 0,030 e 0,100 µg L-1, respectivamente, para um volume de amostra de 20 µL. A precisão foi de 0,30, 0,37 e 0,49% (RSD) para amostras de vinho com concentrações de 1,286, 0,266 e 0.356 µg L-1, respectivamente. A exatidão da metodologia de determinação direta empregando ET AAS foi avaliada por comparação usando um método de digestão ácida e determinação também por ET AAS para cinco amostras de vinho. O método foi aplicado para determinação de cádmio em 30 amostras de vinhos brasileiros. A concentração de cádmio variou de 0,146 a 1,563 µg L-1, cujos valores estão abaixo do nível máximo permitido pela Organização Internacional de Vinha e Vinho (OIV) e pela legislação brasileira, 10 µg L-1.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2011-12-21T12:51:55Z No. of bitstreams: 1 v20n4a22.pdf: 496235 bytes, checksum: 22ebf67e19d1cb62bd852c2daf534127 (MD5)Made available in DSpace on 2011-12-21T12:51:55Z (GMT). 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dc.title.pt_BR.fl_str_mv Multivariate optimization and validation of an analytical method for the determination of cadmium in wines employing ET AAS
dc.title.alternative.pt_BR.fl_str_mv Journal of the Brazilian Chemical Society
title Multivariate optimization and validation of an analytical method for the determination of cadmium in wines employing ET AAS
spellingShingle Multivariate optimization and validation of an analytical method for the determination of cadmium in wines employing ET AAS
Ferreira, Sergio Luis Costa
Cadmium
ET AAS
Brazilian wines
Cadmium in Brazilian wines
title_short Multivariate optimization and validation of an analytical method for the determination of cadmium in wines employing ET AAS
title_full Multivariate optimization and validation of an analytical method for the determination of cadmium in wines employing ET AAS
title_fullStr Multivariate optimization and validation of an analytical method for the determination of cadmium in wines employing ET AAS
title_full_unstemmed Multivariate optimization and validation of an analytical method for the determination of cadmium in wines employing ET AAS
title_sort Multivariate optimization and validation of an analytical method for the determination of cadmium in wines employing ET AAS
author Ferreira, Sergio Luis Costa
author_facet Ferreira, Sergio Luis Costa
Jesus, Robson M. de
Matos, Geraldo D.
Andrade, Jailson Bittencourt de
Bruns, Roy Edward
Santos, Walter Nei Lopes dos
Cavalcante, Dannuza Dias
Vale, Maria G. R.
Dessuy, Morgana B.
author_role author
author2 Jesus, Robson M. de
Matos, Geraldo D.
Andrade, Jailson Bittencourt de
Bruns, Roy Edward
Santos, Walter Nei Lopes dos
Cavalcante, Dannuza Dias
Vale, Maria G. R.
Dessuy, Morgana B.
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Ferreira, Sergio Luis Costa
Jesus, Robson M. de
Matos, Geraldo D.
Andrade, Jailson Bittencourt de
Bruns, Roy Edward
Santos, Walter Nei Lopes dos
Cavalcante, Dannuza Dias
Vale, Maria G. R.
Dessuy, Morgana B.
Ferreira, Sergio Luis Costa
Jesus, Robson M. de
Matos, Geraldo D.
Andrade, Jailson Bittencourt de
Bruns, Roy Edward
Santos, Walter Nei Lopes dos
Cavalcante, Dannuza Dias
Vale, Maria G. R.
Dessuy, Morgana B.
dc.subject.por.fl_str_mv Cadmium
ET AAS
Brazilian wines
Cadmium in Brazilian wines
topic Cadmium
ET AAS
Brazilian wines
Cadmium in Brazilian wines
description p. 788-794.
publishDate 2009
dc.date.issued.fl_str_mv 2009
dc.date.accessioned.fl_str_mv 2011-12-21T12:51:55Z
dc.date.available.fl_str_mv 2011-12-21T12:51:55Z
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dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/4957
dc.identifier.issn.none.fl_str_mv 0103-5053
dc.identifier.number.pt_BR.fl_str_mv v. 20, n. 4.
identifier_str_mv 0103-5053
v. 20, n. 4.
url http://www.repositorio.ufba.br/ri/handle/ri/4957
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