Selectivity enhancement in spectrophotometry: on-line interference suppression using polyurethane foam minicolumn for aluminum determination with Methyl Thymol Blue

Detalhes bibliográficos
Autor(a) principal: Cassella, Ricardo Jorgensen
Data de Publicação: 1999
Outros Autores: Santelli, Ricardo Erthal, Branco, Aline Garcia, Lemos, Valfredo Azevedo, Ferreira, Sergio Luis Costa, Carvalho, Marcelo Souza de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/12566
Resumo: p. 805–808
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spelling Cassella, Ricardo JorgensenSantelli, Ricardo ErthalBranco, Aline GarciaLemos, Valfredo AzevedoFerreira, Sergio Luis CostaCarvalho, Marcelo Souza deCassella, Ricardo JorgensenSantelli, Ricardo ErthalBranco, Aline GarciaLemos, Valfredo AzevedoFerreira, Sergio Luis CostaCarvalho, Marcelo Souza de2013-08-13T18:37:31Z2013-08-13T18:37:31Z19990003-2654http://www.repositorio.ufba.br/ri/handle/ri/12566n. 124p. 805–808A method is proposed for the determination of aluminum by flow injection spectrophotometry with Methyl Thymol Blue after separation of the interferent ions employing a polyurethane foam (PUF) minicolumn. The separation process is based on the retention of the interferents on the PUF minicolumn as thiocyanate complexes. In order to improve the performance of the system the effect of some chemical and flow variables were evaluated and under optimized conditions the system was able to determine aluminum at a concentration of 1.0 mg mL21 in the presence of Fe(iii) at 170 mg mL21, Zn(ii) at 100 mg mL21 and Cu(ii) and Co(ii) at 50 mg mL21, using a PUF minicolumn containing 200 mg of sorbent. The analytical procedure developed was successfully applied to several certified materials, including silicate materials and ores. Very good accuracy and precision was obtained. A limit of detection of 30 ng mL21 was achieved with RSD of 4.5% at 0.25 mg mL21. A linear dynamic range from 0.25–2.0 mg mL21 was observed and a sample frequency of 17 samples per hour was calculated.Submitted by Santiago Fabio (fabio.ssantiago@hotmail.com) on 2013-08-13T18:37:31Z No. of bitstreams: 1 555555555555555555.pdf: 127491 bytes, checksum: d9166e66037a3c2d304abc8e15937902 (MD5)Made available in DSpace on 2013-08-13T18:37:31Z (GMT). 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dc.title.pt_BR.fl_str_mv Selectivity enhancement in spectrophotometry: on-line interference suppression using polyurethane foam minicolumn for aluminum determination with Methyl Thymol Blue
dc.title.alternative.pt_BR.fl_str_mv Analyst
title Selectivity enhancement in spectrophotometry: on-line interference suppression using polyurethane foam minicolumn for aluminum determination with Methyl Thymol Blue
spellingShingle Selectivity enhancement in spectrophotometry: on-line interference suppression using polyurethane foam minicolumn for aluminum determination with Methyl Thymol Blue
Cassella, Ricardo Jorgensen
title_short Selectivity enhancement in spectrophotometry: on-line interference suppression using polyurethane foam minicolumn for aluminum determination with Methyl Thymol Blue
title_full Selectivity enhancement in spectrophotometry: on-line interference suppression using polyurethane foam minicolumn for aluminum determination with Methyl Thymol Blue
title_fullStr Selectivity enhancement in spectrophotometry: on-line interference suppression using polyurethane foam minicolumn for aluminum determination with Methyl Thymol Blue
title_full_unstemmed Selectivity enhancement in spectrophotometry: on-line interference suppression using polyurethane foam minicolumn for aluminum determination with Methyl Thymol Blue
title_sort Selectivity enhancement in spectrophotometry: on-line interference suppression using polyurethane foam minicolumn for aluminum determination with Methyl Thymol Blue
author Cassella, Ricardo Jorgensen
author_facet Cassella, Ricardo Jorgensen
Santelli, Ricardo Erthal
Branco, Aline Garcia
Lemos, Valfredo Azevedo
Ferreira, Sergio Luis Costa
Carvalho, Marcelo Souza de
author_role author
author2 Santelli, Ricardo Erthal
Branco, Aline Garcia
Lemos, Valfredo Azevedo
Ferreira, Sergio Luis Costa
Carvalho, Marcelo Souza de
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Cassella, Ricardo Jorgensen
Santelli, Ricardo Erthal
Branco, Aline Garcia
Lemos, Valfredo Azevedo
Ferreira, Sergio Luis Costa
Carvalho, Marcelo Souza de
Cassella, Ricardo Jorgensen
Santelli, Ricardo Erthal
Branco, Aline Garcia
Lemos, Valfredo Azevedo
Ferreira, Sergio Luis Costa
Carvalho, Marcelo Souza de
description p. 805–808
publishDate 1999
dc.date.issued.fl_str_mv 1999
dc.date.accessioned.fl_str_mv 2013-08-13T18:37:31Z
dc.date.available.fl_str_mv 2013-08-13T18:37:31Z
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/12566
dc.identifier.issn.none.fl_str_mv 0003-2654
dc.identifier.number.pt_BR.fl_str_mv n. 124
identifier_str_mv 0003-2654
n. 124
url http://www.repositorio.ufba.br/ri/handle/ri/12566
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
dc.publisher.none.fl_str_mv Analyst
publisher.none.fl_str_mv Analyst
dc.source.pt_BR.fl_str_mv 10.1039/A900778D
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
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instname_str Universidade Federal da Bahia (UFBA)
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institution UFBA
reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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