On-line preconcentration system using a minicolumn of polyurethane foam loaded with Me-BTABr for zinc determination by Flame Atomic Absorption Spectrometry

Detalhes bibliográficos
Autor(a) principal: Santos, Walter Nei Lopes dos
Data de Publicação: 2003
Outros Autores: Lemos, Valfredo Azevedo, Santos, Juracir Silva
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/14311
Resumo: Texto completo: acesso restrito. p. 283–290
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spelling Santos, Walter Nei Lopes dosLemos, Valfredo AzevedoSantos, Juracir SilvaSantos, Walter Nei Lopes dosLemos, Valfredo AzevedoSantos, Juracir Silva2014-01-10T13:42:15Z20030003-2670http://repositorio.ufba.br/ri/handle/ri/14311v. 1481, n. 2Texto completo: acesso restrito. p. 283–290In the present paper, an on-line system for preconcentration and determination of zinc by Flame Atomic Absorption Spectrometry (FAAS) is proposed. It is based in the sorption of zinc(II) ions on a minicolumn packed with polyurethane foam loaded with 2-[2′-(6-methyl-benzothiazolylazo)]-4-bromophenol (Me-BTABr) reagent. Chemical and flow variables as pH effect, sample flow rate and eluent concentration were optimized using univariate methodology. The results demonstrated that zinc can determinate using the sample pH in the range of 6.5–9.2, sample flow rate of 6.0 ml min−1, and the elution step using 0.10 mol l−1 hydrochloric acid solution at flow rate of 5.5 ml min−1. In these conditions, an enrichment factor of 23 and a sampling rate of 48 samples per hour were achieved. The detection limit (DL, 3σ) as IUPAC recommendation was 0.37 μg l−1 and the precision (assessed as the relative standard deviation, R.S.D.) reached values of 5.9–1.8% in zinc solutions of 1.0–10.0 μg l−1 concentration, respectively. The method was successfully applied to the determination of trace amounts of zinc in natural water samples from Salvador (Brazil).Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2014-01-10T13:42:15Z No. of bitstreams: 1 Walter Nei Lopes dos Santos.pdf: 107987 bytes, checksum: fc6f7a610b27e07fbcf6a640ef7ea6a5 (MD5)Made available in DSpace on 2014-01-10T13:42:15Z (GMT). No. of bitstreams: 1 Walter Nei Lopes dos Santos.pdf: 107987 bytes, checksum: fc6f7a610b27e07fbcf6a640ef7ea6a5 (MD5) Previous issue date: 2003http://dx.doi.org.ez10.periodicos.capes.gov.br/10.1016/S0003-2670(03)00084-9reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAPreconcentrationMe-BTABrZincFAASPolyurethaneOn-line preconcentration system using a minicolumn of polyurethane foam loaded with Me-BTABr for zinc determination by Flame Atomic Absorption SpectrometryAnalytica Chimica Actainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINALWalter Nei Lopes dos Santos.pdfWalter Nei Lopes dos Santos.pdfapplication/pdf107987https://repositorio.ufba.br/bitstream/ri/14311/1/Walter%20Nei%20Lopes%20dos%20Santos.pdffc6f7a610b27e07fbcf6a640ef7ea6a5MD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/14311/2/license.txtff6eaa8b858ea317fded99f125f5fcd0MD52TEXTWalter Nei Lopes dos Santos.pdf.txtWalter Nei Lopes dos Santos.pdf.txtExtracted texttext/plain29507https://repositorio.ufba.br/bitstream/ri/14311/3/Walter%20Nei%20Lopes%20dos%20Santos.pdf.txt5e7531e5cd8aa3c6811b329ce10739a7MD53ri/143112022-07-05 14:02:49.636oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:02:49Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv On-line preconcentration system using a minicolumn of polyurethane foam loaded with Me-BTABr for zinc determination by Flame Atomic Absorption Spectrometry
dc.title.alternative.pt_BR.fl_str_mv Analytica Chimica Acta
title On-line preconcentration system using a minicolumn of polyurethane foam loaded with Me-BTABr for zinc determination by Flame Atomic Absorption Spectrometry
spellingShingle On-line preconcentration system using a minicolumn of polyurethane foam loaded with Me-BTABr for zinc determination by Flame Atomic Absorption Spectrometry
Santos, Walter Nei Lopes dos
Preconcentration
Me-BTABr
Zinc
FAAS
Polyurethane
title_short On-line preconcentration system using a minicolumn of polyurethane foam loaded with Me-BTABr for zinc determination by Flame Atomic Absorption Spectrometry
title_full On-line preconcentration system using a minicolumn of polyurethane foam loaded with Me-BTABr for zinc determination by Flame Atomic Absorption Spectrometry
title_fullStr On-line preconcentration system using a minicolumn of polyurethane foam loaded with Me-BTABr for zinc determination by Flame Atomic Absorption Spectrometry
title_full_unstemmed On-line preconcentration system using a minicolumn of polyurethane foam loaded with Me-BTABr for zinc determination by Flame Atomic Absorption Spectrometry
title_sort On-line preconcentration system using a minicolumn of polyurethane foam loaded with Me-BTABr for zinc determination by Flame Atomic Absorption Spectrometry
author Santos, Walter Nei Lopes dos
author_facet Santos, Walter Nei Lopes dos
Lemos, Valfredo Azevedo
Santos, Juracir Silva
author_role author
author2 Lemos, Valfredo Azevedo
Santos, Juracir Silva
author2_role author
author
dc.contributor.author.fl_str_mv Santos, Walter Nei Lopes dos
Lemos, Valfredo Azevedo
Santos, Juracir Silva
Santos, Walter Nei Lopes dos
Lemos, Valfredo Azevedo
Santos, Juracir Silva
dc.subject.por.fl_str_mv Preconcentration
Me-BTABr
Zinc
FAAS
Polyurethane
topic Preconcentration
Me-BTABr
Zinc
FAAS
Polyurethane
description Texto completo: acesso restrito. p. 283–290
publishDate 2003
dc.date.issued.fl_str_mv 2003
dc.date.accessioned.fl_str_mv 2014-01-10T13:42:15Z
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://repositorio.ufba.br/ri/handle/ri/14311
dc.identifier.issn.none.fl_str_mv 0003-2670
dc.identifier.number.pt_BR.fl_str_mv v. 1481, n. 2
identifier_str_mv 0003-2670
v. 1481, n. 2
url http://repositorio.ufba.br/ri/handle/ri/14311
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.source.pt_BR.fl_str_mv http://dx.doi.org.ez10.periodicos.capes.gov.br/10.1016/S0003-2670(03)00084-9
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
instacron:UFBA
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reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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