Automatic on-line pre-concentration system using a knotted reactor for the FAAS determination of lead in drinking water

Detalhes bibliográficos
Autor(a) principal: Souza, Anderson Santos
Data de Publicação: 2007
Outros Autores: Brandão, Geovani Cardoso, Santos, Walter Nei Lopes dos, Lemos, Valfredo Azevedo, Ganzarolli, Edgard Moreira, Bruns, Roy Edward, Ferreira, Sergio Luis Costa
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/14509
Resumo: Texto completo: acesso restrito. p. 540-545
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spelling Souza, Anderson SantosBrandão, Geovani CardosoSantos, Walter Nei Lopes dosLemos, Valfredo AzevedoGanzarolli, Edgard MoreiraBruns, Roy EdwardFerreira, Sergio Luis CostaSouza, Anderson SantosBrandão, Geovani CardosoSantos, Walter Nei Lopes dosLemos, Valfredo AzevedoGanzarolli, Edgard MoreiraBruns, Roy EdwardFerreira, Sergio Luis Costa2014-01-31T14:58:25Z20070304-3894http://repositorio.ufba.br/ri/handle/ri/14509v. 141, n. 3Texto completo: acesso restrito. p. 540-545An automatic on-line pre-concentration system is proposed for lead determination in drinking water using flame atomic absorption spectrometry (FAAS). Lead(II) ions are retained as the 1-(2-pyridylazo)-2-naphthol (PAN) complex in the walls of a knotted reactor, followed by an elution step using 0.50 mol L−1 hydrochloric acid solution. Optimisation involving the sampling flow rate, pH and buffer concentration factors was performed using a Box–Behnken design. Other factors were established considering results of previous experiments. The procedure allows the determination of lead with a 0.43 μg L−1 detection limit (3σ/S) and precisions (expressed as relative standard deviation) of 4.84% (N = 7) and 2.9% (N = 7) for lead concentrations of 5 and 25 μg L−1, respectively. The accuracy was confirmed by the determination of lead in the NIST SRM 1643d trace elements in natural water standard reference material. The pre-concentration factor obtained is 26.5 and the sampling frequency is 48 h−1. The recovery achieved for lead determination in the presence of several ions demonstrated that this procedure could be applied to the analysis of drinking water samples. The method was applied for lead determination in drinking water samples collected in Jequié City, Brazil. The lead concentration found in 25 samples were always lower than the permissible maximum levels stipulated by World Health Organization.Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2014-01-31T14:58:25Z No. of bitstreams: 1 1-s2.0-S0304389406008119-main.pdf: 338397 bytes, checksum: a9d3e21d2744671d44dfe4bfc61f92e2 (MD5)Made available in DSpace on 2014-01-31T14:58:25Z (GMT). No. of bitstreams: 1 1-s2.0-S0304389406008119-main.pdf: 338397 bytes, checksum: a9d3e21d2744671d44dfe4bfc61f92e2 (MD5) Previous issue date: 2007http://dx.doi.org/10.1016/j.jhazmat.2006.07.015reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBADetermination of leadAutomatic on-line pre-concentration systemKnotted reactionFAASDrinking waterBox–Benhken designAutomatic on-line pre-concentration system using a knotted reactor for the FAAS determination of lead in drinking waterJournal of Hazardous Materialsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINAL1-s2.0-S0304389406008119-main.pdf1-s2.0-S0304389406008119-main.pdfapplication/pdf338397https://repositorio.ufba.br/bitstream/ri/14509/1/1-s2.0-S0304389406008119-main.pdfa9d3e21d2744671d44dfe4bfc61f92e2MD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/14509/2/license.txtff6eaa8b858ea317fded99f125f5fcd0MD52TEXT1-s2.0-S0304389406008119-main.pdf.txt1-s2.0-S0304389406008119-main.pdf.txtExtracted texttext/plain27160https://repositorio.ufba.br/bitstream/ri/14509/3/1-s2.0-S0304389406008119-main.pdf.txt836515407c456cea8596e3457a65e0f4MD53ri/145092022-07-05 14:02:48.154oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:02:48Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Automatic on-line pre-concentration system using a knotted reactor for the FAAS determination of lead in drinking water
dc.title.alternative.pt_BR.fl_str_mv Journal of Hazardous Materials
title Automatic on-line pre-concentration system using a knotted reactor for the FAAS determination of lead in drinking water
spellingShingle Automatic on-line pre-concentration system using a knotted reactor for the FAAS determination of lead in drinking water
Souza, Anderson Santos
Determination of lead
Automatic on-line pre-concentration system
Knotted reaction
FAAS
Drinking water
Box–Benhken design
title_short Automatic on-line pre-concentration system using a knotted reactor for the FAAS determination of lead in drinking water
title_full Automatic on-line pre-concentration system using a knotted reactor for the FAAS determination of lead in drinking water
title_fullStr Automatic on-line pre-concentration system using a knotted reactor for the FAAS determination of lead in drinking water
title_full_unstemmed Automatic on-line pre-concentration system using a knotted reactor for the FAAS determination of lead in drinking water
title_sort Automatic on-line pre-concentration system using a knotted reactor for the FAAS determination of lead in drinking water
author Souza, Anderson Santos
author_facet Souza, Anderson Santos
Brandão, Geovani Cardoso
Santos, Walter Nei Lopes dos
Lemos, Valfredo Azevedo
Ganzarolli, Edgard Moreira
Bruns, Roy Edward
Ferreira, Sergio Luis Costa
author_role author
author2 Brandão, Geovani Cardoso
Santos, Walter Nei Lopes dos
Lemos, Valfredo Azevedo
Ganzarolli, Edgard Moreira
Bruns, Roy Edward
Ferreira, Sergio Luis Costa
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Souza, Anderson Santos
Brandão, Geovani Cardoso
Santos, Walter Nei Lopes dos
Lemos, Valfredo Azevedo
Ganzarolli, Edgard Moreira
Bruns, Roy Edward
Ferreira, Sergio Luis Costa
Souza, Anderson Santos
Brandão, Geovani Cardoso
Santos, Walter Nei Lopes dos
Lemos, Valfredo Azevedo
Ganzarolli, Edgard Moreira
Bruns, Roy Edward
Ferreira, Sergio Luis Costa
dc.subject.por.fl_str_mv Determination of lead
Automatic on-line pre-concentration system
Knotted reaction
FAAS
Drinking water
Box–Benhken design
topic Determination of lead
Automatic on-line pre-concentration system
Knotted reaction
FAAS
Drinking water
Box–Benhken design
description Texto completo: acesso restrito. p. 540-545
publishDate 2007
dc.date.issued.fl_str_mv 2007
dc.date.accessioned.fl_str_mv 2014-01-31T14:58:25Z
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/14509
dc.identifier.issn.none.fl_str_mv 0304-3894
dc.identifier.number.pt_BR.fl_str_mv v. 141, n. 3
identifier_str_mv 0304-3894
v. 141, n. 3
url http://repositorio.ufba.br/ri/handle/ri/14509
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/10.1016/j.jhazmat.2006.07.015
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname: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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