Multivariate optimization and validation of an analytical method for the determination of cadmium in wines employing ET AAS
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , , , , , |
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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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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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
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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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eng |
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eng |
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info:eu-repo/semantics/openAccess |
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openAccess |
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reponame:Repositório Institucional da UFBA instname:Universidade Federal da Bahia (UFBA) instacron:UFBA |
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