An automated on-line flow system for the pre-concentration and determination of lead by flame atomic absorption spectrometry

Detalhes bibliográficos
Autor(a) principal: Ferreira, Sergio Luis Costa
Data de Publicação: 2001
Outros Autores: Lemos, Valfredo Azevedo, Santelli, Ricardo Erthal, Ganzarolli, Edgard, Curtius, Adilson José
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/7786
Resumo: Texto completo: acesso restrito. p. 41–46
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spelling Ferreira, Sergio Luis CostaLemos, Valfredo AzevedoSantelli, Ricardo ErthalGanzarolli, EdgardCurtius, Adilson JoséFerreira, Sergio Luis CostaLemos, Valfredo AzevedoSantelli, Ricardo ErthalGanzarolli, EdgardCurtius, Adilson José2013-01-10T12:42:58Z20010026-265Xhttp://www.repositorio.ufba.br/ri/handle/ri/7786v. 68, n. 1Texto completo: acesso restrito. p. 41–46The use of Amberlite XAD-2 modified by 2-(2-benzothiazolylazo)-2-p-cresol (BTAC) as a sorbent in an on-line pre-concentration system for lead determination has been proposed. The procedure is based on the sorption of lead(II) ions onto a minicolumn packed with modified Amberlite XAD-2, followed by elution with 0.10 mol l−1 hydrochloric acid and determination by flame atomic absorption spectrometry. The on-line flow system uses four three-way solenoid valves and is electronically controlled in a time-based mode. Chemical and flow variables were optimized. The results demonstrated that sample solutions containing lead(II) in the concentration range from 3.7 to 300.0 μg l−1 in a solution of pH between 6.5 and 8.5 could be determined, using a pre-concentration time of 2 min. The enrichment factor was 27 for a sample volume of 4.50 ml. The limit of detection was 3.7 μg l−1. The relative standard deviations (R.S.D.) were in the range of 4.4–2.3% for lead concentrations from 50.0 to 300.0 μg l−1, respectively. The method was tolerant to other ions usually present in biological samples. Good accuracy was assured by the analysis of biological reference materials.Submitted by Suelen Reis (suelen_suzane@hotmail.com) on 2013-01-10T12:42:58Z No. of bitstreams: 1 Ferreira.pdf: 152960 bytes, checksum: 9a1e9b8af2e74d7fb368c44e122abd62 (MD5)Made available in DSpace on 2013-01-10T12:42:58Z (GMT). No. of bitstreams: 1 Ferreira.pdf: 152960 bytes, checksum: 9a1e9b8af2e74d7fb368c44e122abd62 (MD5) Previous issue date: 2001http://dx.doi.org/10.1016/S0026-265X(00)00166-1reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAFlame atomic absorption spectrometryFlow injection systemAmberlite XAD-22-(2-benzothiazolylazo)-2-p-cresolLeadAn automated on-line flow system for the pre-concentration and determination of lead by flame atomic absorption spectrometryMicrochemical Journalinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01enginfo:eu-repo/semantics/openAccessORIGINALFerreira.pdfFerreira.pdfapplication/pdf152960https://repositorio.ufba.br/bitstream/ri/7786/1/Ferreira.pdf9a1e9b8af2e74d7fb368c44e122abd62MD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/7786/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXTFerreira.pdf.txtFerreira.pdf.txtExtracted texttext/plain18707https://repositorio.ufba.br/bitstream/ri/7786/3/Ferreira.pdf.txtb0e6951b061aba2a4fe8f468ee5de29fMD53ri/77862022-07-05 14:03:37.983oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:37Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv An automated on-line flow system for the pre-concentration and determination of lead by flame atomic absorption spectrometry
dc.title.alternative.pt_BR.fl_str_mv Microchemical Journal
title An automated on-line flow system for the pre-concentration and determination of lead by flame atomic absorption spectrometry
spellingShingle An automated on-line flow system for the pre-concentration and determination of lead by flame atomic absorption spectrometry
Ferreira, Sergio Luis Costa
Flame atomic absorption spectrometry
Flow injection system
Amberlite XAD-2
2-(2-benzothiazolylazo)-2-p-cresol
Lead
title_short An automated on-line flow system for the pre-concentration and determination of lead by flame atomic absorption spectrometry
title_full An automated on-line flow system for the pre-concentration and determination of lead by flame atomic absorption spectrometry
title_fullStr An automated on-line flow system for the pre-concentration and determination of lead by flame atomic absorption spectrometry
title_full_unstemmed An automated on-line flow system for the pre-concentration and determination of lead by flame atomic absorption spectrometry
title_sort An automated on-line flow system for the pre-concentration and determination of lead by flame atomic absorption spectrometry
author Ferreira, Sergio Luis Costa
author_facet Ferreira, Sergio Luis Costa
Lemos, Valfredo Azevedo
Santelli, Ricardo Erthal
Ganzarolli, Edgard
Curtius, Adilson José
author_role author
author2 Lemos, Valfredo Azevedo
Santelli, Ricardo Erthal
Ganzarolli, Edgard
Curtius, Adilson José
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Ferreira, Sergio Luis Costa
Lemos, Valfredo Azevedo
Santelli, Ricardo Erthal
Ganzarolli, Edgard
Curtius, Adilson José
Ferreira, Sergio Luis Costa
Lemos, Valfredo Azevedo
Santelli, Ricardo Erthal
Ganzarolli, Edgard
Curtius, Adilson José
dc.subject.por.fl_str_mv Flame atomic absorption spectrometry
Flow injection system
Amberlite XAD-2
2-(2-benzothiazolylazo)-2-p-cresol
Lead
topic Flame atomic absorption spectrometry
Flow injection system
Amberlite XAD-2
2-(2-benzothiazolylazo)-2-p-cresol
Lead
description Texto completo: acesso restrito. p. 41–46
publishDate 2001
dc.date.issued.fl_str_mv 2001
dc.date.accessioned.fl_str_mv 2013-01-10T12:42:58Z
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/7786
dc.identifier.issn.none.fl_str_mv 0026-265X
dc.identifier.number.pt_BR.fl_str_mv v. 68, n. 1
identifier_str_mv 0026-265X
v. 68, n. 1
url http://www.repositorio.ufba.br/ri/handle/ri/7786
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/S0026-265X(00)00166-1
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)
instacron_str UFBA
institution UFBA
reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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