Uso da espectrometria por fluorescência de raios-X por energia dispersiva para determinação indireta de cloreto e sulfato em álcool combustível

Detalhes bibliográficos
Autor(a) principal: Chaves, Thaise J.
Data de Publicação: 2009
Outros Autores: Teixeira, Leonardo Sena Gomes, Guimarães, Paulo R. B., Pontes, Luiz Antônio Magalhães, Teixeira, Josanaide Sant'Ana Ribeiro
Tipo de documento: Artigo de conferência
Idioma: por
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/5035
Resumo: 7 p.
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spelling Chaves, Thaise J.Teixeira, Leonardo Sena GomesGuimarães, Paulo R. B.Pontes, Luiz Antônio MagalhãesTeixeira, Josanaide Sant'Ana RibeiroChaves, Thaise J.Teixeira, Leonardo Sena GomesGuimarães, Paulo R. B.Pontes, Luiz Antônio MagalhãesTeixeira, Josanaide Sant'Ana Ribeiro2012-01-06T10:45:54Z2012-01-06T10:45:54Z2009-10http://www.repositorio.ufba.br/ri/handle/ri/5035v. 5.7 p.This paper proposes an alternative analytical method using energy dispersive X-ray fluorescence (EDXRF) to determine chloride and sulfate ions in ethanol fuel samples after precipitation procedure. The preconcentration methodology involved the precipitation of the analytes as silver chloride and barium sulfate followed by filtration through a paper filter, which demonstrated to be a convenient substrate for EDXRF measurements. The elements were determined directly on the filters using silver and barium lines for the indirect determination of chloride and sulfate ions, respectively. The precisions calculated from 20 consecutive measurements and defined as the coefficient of variation of standard solutions containing 1.0μgmL−1 of Cl− and SO4 2− were 7.3% and 5.9%, respectively. The limits of detection (LOD), defined as the analyte concentration that gives a response equivalent to three times the standard deviation of the blank (n = 10), were found to be 25μgL−1 and 30μgL−1 for Cl− and SO4 2−, respectively. The proposed method was applied to chloride and sulfate ions determination in hydrated ethanol fuel samples collected from different gas stations.Submitted by Ana Valéria de Jesus Moura (anavaleria_131@hotmail.com) on 2012-01-06T10:45:53Z No. of bitstreams: 1 8082009.40.1.2.pdf: 378058 bytes, checksum: c6e1b00abfb85758e2f4e2ea74507bf4 (MD5)Made available in DSpace on 2012-01-06T10:45:54Z (GMT). No. of bitstreams: 1 8082009.40.1.2.pdf: 378058 bytes, checksum: c6e1b00abfb85758e2f4e2ea74507bf4 (MD5) Previous issue date: 2009-10Uso da espectrometria por fluorescência de raios-X por energia dispersiva para determinação indireta de cloreto e sulfato em álcool combustível5º Congresso Brasileiro de Pesquisa e Desenvolvimento em Petróleo e Gásinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectporreponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAinfo:eu-repo/semantics/openAccessORIGINAL8082009.40.1.2.pdf8082009.40.1.2.pdfapplication/pdf378058https://repositorio.ufba.br/bitstream/ri/5035/1/8082009.40.1.2.pdfc6e1b00abfb85758e2f4e2ea74507bf4MD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/5035/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXT8082009.40.1.2.pdf.txt8082009.40.1.2.pdf.txtExtracted texttext/plain18871https://repositorio.ufba.br/bitstream/ri/5035/3/8082009.40.1.2.pdf.txt5e40cd6fddd7b04a1f6fce2a4a98045eMD53ri/50352023-10-24 08:30:19.492oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322023-10-24T11:30:19Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Uso da espectrometria por fluorescência de raios-X por energia dispersiva para determinação indireta de cloreto e sulfato em álcool combustível
dc.title.alternative.pt_BR.fl_str_mv 5º Congresso Brasileiro de Pesquisa e Desenvolvimento em Petróleo e Gás
title Uso da espectrometria por fluorescência de raios-X por energia dispersiva para determinação indireta de cloreto e sulfato em álcool combustível
spellingShingle Uso da espectrometria por fluorescência de raios-X por energia dispersiva para determinação indireta de cloreto e sulfato em álcool combustível
Chaves, Thaise J.
title_short Uso da espectrometria por fluorescência de raios-X por energia dispersiva para determinação indireta de cloreto e sulfato em álcool combustível
title_full Uso da espectrometria por fluorescência de raios-X por energia dispersiva para determinação indireta de cloreto e sulfato em álcool combustível
title_fullStr Uso da espectrometria por fluorescência de raios-X por energia dispersiva para determinação indireta de cloreto e sulfato em álcool combustível
title_full_unstemmed Uso da espectrometria por fluorescência de raios-X por energia dispersiva para determinação indireta de cloreto e sulfato em álcool combustível
title_sort Uso da espectrometria por fluorescência de raios-X por energia dispersiva para determinação indireta de cloreto e sulfato em álcool combustível
author Chaves, Thaise J.
author_facet Chaves, Thaise J.
Teixeira, Leonardo Sena Gomes
Guimarães, Paulo R. B.
Pontes, Luiz Antônio Magalhães
Teixeira, Josanaide Sant'Ana Ribeiro
author_role author
author2 Teixeira, Leonardo Sena Gomes
Guimarães, Paulo R. B.
Pontes, Luiz Antônio Magalhães
Teixeira, Josanaide Sant'Ana Ribeiro
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Chaves, Thaise J.
Teixeira, Leonardo Sena Gomes
Guimarães, Paulo R. B.
Pontes, Luiz Antônio Magalhães
Teixeira, Josanaide Sant'Ana Ribeiro
Chaves, Thaise J.
Teixeira, Leonardo Sena Gomes
Guimarães, Paulo R. B.
Pontes, Luiz Antônio Magalhães
Teixeira, Josanaide Sant'Ana Ribeiro
description 7 p.
publishDate 2009
dc.date.issued.fl_str_mv 2009-10
dc.date.accessioned.fl_str_mv 2012-01-06T10:45:54Z
dc.date.available.fl_str_mv 2012-01-06T10:45:54Z
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