Determination of total aldehydes in fuel ethanol by MBTH method - sequential injection analysis

Detalhes bibliográficos
Autor(a) principal: Oliveira, Fábio Santos de
Data de Publicação: 2005
Outros Autores: Leite, Bárbara Cecília O., Andrade, Marta Valéria Almeida Santana de, Korn, Mauro
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/5077
Resumo: p. 87-92.
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spelling Oliveira, Fábio Santos deLeite, Bárbara Cecília O.Andrade, Marta Valéria Almeida Santana deKorn, MauroOliveira, Fábio Santos deLeite, Bárbara Cecília O.Andrade, Marta Valéria Almeida Santana deKorn, Mauro2012-01-09T17:06:17Z2012-01-09T17:06:17Z20050103-5053http://www.repositorio.ufba.br/ri/handle/ri/5077v. 16, n. 1.p. 87-92.Um sistema de análise por injeção sequencial (SIA) foi proposto para a determinação de aldeídos totais em amostras de álcool combustível. O procedimento foi baseado na reação dos aldeídos alifáticos com o 3-metil-2-benzotiazolona hidrazona (MBTH), levando à formação de um composto azul em presença de Fe3+. As estratégias de monossegmentação e amostragem binária foram empregadas para aumentar a sensibilidade do método. A taxa de reação entre o MBTH e aldeídos foi aumentada pelo aquecimento da zona da amostra, inserindo a bobina de reação na cavidade de um forno de microondas doméstico. A faixa linear de trabalho foi entre 0,3 e 6 mg L-1 e o desvio padrão relativo foi inferior a 2,5% em todas determinações. O limite de detecção calculado foi de 60 mg L-1. Os resultados do método proposto concordaram com os obtidos por 2,4-DNPH-CLAE. Nas condições otimizadas o procedimento proposto possibilitou a determinação de até 10 amostras por hora.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-01-09T17:06:17Z No. of bitstreams: 1 a13v16n1.pdf: 228221 bytes, checksum: 17b4f736b5b70f70767f09a8a71137a5 (MD5)Made available in DSpace on 2012-01-09T17:06:17Z (GMT). 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dc.title.pt_BR.fl_str_mv Determination of total aldehydes in fuel ethanol by MBTH method - sequential injection analysis
dc.title.alternative.pt_BR.fl_str_mv Journal of the Brazilian Chemical Society
title Determination of total aldehydes in fuel ethanol by MBTH method - sequential injection analysis
spellingShingle Determination of total aldehydes in fuel ethanol by MBTH method - sequential injection analysis
Oliveira, Fábio Santos de
Sequential injection analysis
Total aldehyde determination
MBTH
Binary sampling
Monosegmentation
title_short Determination of total aldehydes in fuel ethanol by MBTH method - sequential injection analysis
title_full Determination of total aldehydes in fuel ethanol by MBTH method - sequential injection analysis
title_fullStr Determination of total aldehydes in fuel ethanol by MBTH method - sequential injection analysis
title_full_unstemmed Determination of total aldehydes in fuel ethanol by MBTH method - sequential injection analysis
title_sort Determination of total aldehydes in fuel ethanol by MBTH method - sequential injection analysis
author Oliveira, Fábio Santos de
author_facet Oliveira, Fábio Santos de
Leite, Bárbara Cecília O.
Andrade, Marta Valéria Almeida Santana de
Korn, Mauro
author_role author
author2 Leite, Bárbara Cecília O.
Andrade, Marta Valéria Almeida Santana de
Korn, Mauro
author2_role author
author
author
dc.contributor.author.fl_str_mv Oliveira, Fábio Santos de
Leite, Bárbara Cecília O.
Andrade, Marta Valéria Almeida Santana de
Korn, Mauro
Oliveira, Fábio Santos de
Leite, Bárbara Cecília O.
Andrade, Marta Valéria Almeida Santana de
Korn, Mauro
dc.subject.por.fl_str_mv Sequential injection analysis
Total aldehyde determination
MBTH
Binary sampling
Monosegmentation
topic Sequential injection analysis
Total aldehyde determination
MBTH
Binary sampling
Monosegmentation
description p. 87-92.
publishDate 2005
dc.date.issued.fl_str_mv 2005
dc.date.accessioned.fl_str_mv 2012-01-09T17:06:17Z
dc.date.available.fl_str_mv 2012-01-09T17:06:17Z
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/5077
dc.identifier.issn.none.fl_str_mv 0103-5053
dc.identifier.number.pt_BR.fl_str_mv v. 16, n. 1.
identifier_str_mv 0103-5053
v. 16, n. 1.
url http://www.repositorio.ufba.br/ri/handle/ri/5077
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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