Determination of zinc and copper in human hair by slurry sampling employing sequential multi-element flame atomic absorption spectrometry

Detalhes bibliográficos
Autor(a) principal: Ferreira, Hadla S.
Data de Publicação: 2007
Outros Autores: Santos, Walter Nei Lopes dos, Fiuza, Raigenis da Paz, Nóbrega, Joaquim de Araújo, 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/14287
Resumo: Texto completo: acesso restrito. p. 128-131
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spelling Ferreira, Hadla S.Santos, Walter Nei Lopes dosFiuza, Raigenis da PazNóbrega, Joaquim de AraújoFerreira, Sergio Luis CostaFerreira, Hadla S.Santos, Walter Nei Lopes dosFiuza, Raigenis da PazNóbrega, Joaquim de AraújoFerreira, Sergio Luis Costa2014-01-07T15:40:31Z20070026-265Xhttp://repositorio.ufba.br/ri/handle/ri/14287v. 87, n. 2Texto completo: acesso restrito. p. 128-131The present work proposes a direct method based on slurry sampling for the determination of zinc and copper in human hair samples by multi-element sequential flame atomic absorption spectrometry. The slurries were prepared by cryogenic grinding and sonication of the samples. The optimization step was performed using univariate methodology and the factors studied were: nature and concentration of the acid solution, amount sample/slurry volume, sonication time, and particle size. The established experimental conditions are the use of a sample mass of 50 mg, 2 mol L− 1 nitric acid solution, sonication time of 20 min and slurry volume of 10 mL. Adopting the optimized conditions, this method allows the determination of zinc and copper with detection limits of 88.3 and 53.3 ng g− 1, respectively, and precision expressed as relative standard deviation (RSD) of 1.7% and 1.6% (both, n = 10) for contents of zinc and copper of 100.0 and 33.3 μg g− 1, respectively. The accuracy was checked and confirmed by analysis of two certified reference materials of human hair. The procedure was applied for the determination of zinc and copper in two human hair samples. The zinc and copper contents varied from 100.0 to 175.6 and from 3.2 to 32.8 μg g− 1, respectively. These samples were also analyzed after complete digestion in a closed system and determination by FAAS. The statistical comparison by t-test (95% confidence level) showed no significant difference between these results.Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2014-01-07T15:40:31Z No. of bitstreams: 1 1-s2.0-S0026265X07000823-main.pdf: 124980 bytes, checksum: 9372cadf91422efa8d701496fef5b222 (MD5)Made available in DSpace on 2014-01-07T15:40:31Z (GMT). No. of bitstreams: 1 1-s2.0-S0026265X07000823-main.pdf: 124980 bytes, checksum: 9372cadf91422efa8d701496fef5b222 (MD5) Previous issue date: 2007http://dx.doi.org.ez10.periodicos.capes.gov.br/10.1016/j.microc.2007.06.005reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAZincCopperHuman hairSlurry samplingSequential multi-element flame atomic absorption spectrometryDetermination of zinc and copper in human hair by slurry sampling employing sequential multi-element flame atomic absorption spectrometryMicrochemical Journalinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINAL1-s2.0-S0026265X07000823-main.pdf1-s2.0-S0026265X07000823-main.pdfapplication/pdf124980https://repositorio.ufba.br/bitstream/ri/14287/1/1-s2.0-S0026265X07000823-main.pdf9372cadf91422efa8d701496fef5b222MD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/14287/2/license.txtff6eaa8b858ea317fded99f125f5fcd0MD52TEXT1-s2.0-S0026265X07000823-main.pdf.txt1-s2.0-S0026265X07000823-main.pdf.txtExtracted texttext/plain17086https://repositorio.ufba.br/bitstream/ri/14287/3/1-s2.0-S0026265X07000823-main.pdf.txt7421cb9a8b1e7600062fa5243ee83b05MD53ri/142872022-08-08 13:17:58.413oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-08-08T16:17:58Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Determination of zinc and copper in human hair by slurry sampling employing sequential multi-element flame atomic absorption spectrometry
dc.title.alternative.pt_BR.fl_str_mv Microchemical Journal
title Determination of zinc and copper in human hair by slurry sampling employing sequential multi-element flame atomic absorption spectrometry
spellingShingle Determination of zinc and copper in human hair by slurry sampling employing sequential multi-element flame atomic absorption spectrometry
Ferreira, Hadla S.
Zinc
Copper
Human hair
Slurry sampling
Sequential multi-element flame atomic absorption spectrometry
title_short Determination of zinc and copper in human hair by slurry sampling employing sequential multi-element flame atomic absorption spectrometry
title_full Determination of zinc and copper in human hair by slurry sampling employing sequential multi-element flame atomic absorption spectrometry
title_fullStr Determination of zinc and copper in human hair by slurry sampling employing sequential multi-element flame atomic absorption spectrometry
title_full_unstemmed Determination of zinc and copper in human hair by slurry sampling employing sequential multi-element flame atomic absorption spectrometry
title_sort Determination of zinc and copper in human hair by slurry sampling employing sequential multi-element flame atomic absorption spectrometry
author Ferreira, Hadla S.
author_facet Ferreira, Hadla S.
Santos, Walter Nei Lopes dos
Fiuza, Raigenis da Paz
Nóbrega, Joaquim de Araújo
Ferreira, Sergio Luis Costa
author_role author
author2 Santos, Walter Nei Lopes dos
Fiuza, Raigenis da Paz
Nóbrega, Joaquim de Araújo
Ferreira, Sergio Luis Costa
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Ferreira, Hadla S.
Santos, Walter Nei Lopes dos
Fiuza, Raigenis da Paz
Nóbrega, Joaquim de Araújo
Ferreira, Sergio Luis Costa
Ferreira, Hadla S.
Santos, Walter Nei Lopes dos
Fiuza, Raigenis da Paz
Nóbrega, Joaquim de Araújo
Ferreira, Sergio Luis Costa
dc.subject.por.fl_str_mv Zinc
Copper
Human hair
Slurry sampling
Sequential multi-element flame atomic absorption spectrometry
topic Zinc
Copper
Human hair
Slurry sampling
Sequential multi-element flame atomic absorption spectrometry
description Texto completo: acesso restrito. p. 128-131
publishDate 2007
dc.date.issued.fl_str_mv 2007
dc.date.accessioned.fl_str_mv 2014-01-07T15:40:31Z
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://repositorio.ufba.br/ri/handle/ri/14287
dc.identifier.issn.none.fl_str_mv 0026-265X
dc.identifier.number.pt_BR.fl_str_mv v. 87, n. 2
identifier_str_mv 0026-265X
v. 87, n. 2
url http://repositorio.ufba.br/ri/handle/ri/14287
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/j.microc.2007.06.005
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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