Feasibility of using direct determination of cadmium and lead in fresh meat by electrothermal atomic absorption spectrometry for screening purposes

Detalhes bibliográficos
Autor(a) principal: Damin, Isabel Cristina Ferreira
Data de Publicação: 2007
Outros Autores: Silva, Márcia M., Vale, Maria Goreti R., Welz, Bernhard
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/14398
Resumo: Texto completo: acesso restrito. p. 1037-1045
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spelling Damin, Isabel Cristina FerreiraSilva, Márcia M.Vale, Maria Goreti R.Welz, BernhardDamin, Isabel Cristina FerreiraSilva, Márcia M.Vale, Maria Goreti R.Welz, Bernhard2014-01-21T11:08:19Z20070584-8547http://repositorio.ufba.br/ri/handle/ri/14398v. 62, n. 9Texto completo: acesso restrito. p. 1037-1045A method for the direct determination of cadmium and lead in fresh meat for screening purposes is proposed using electrothermal atomic absorption spectrometry. The fresh meat samples were homogenized, weighed directly onto solid sampling platforms and introduced into a transversely heated solid sampling graphite tube. The main challenges associated with this procedure, such as weighing errors and optimization of the temperature program were investigated in detail. Calibration was performed against aqueous standards and two modifiers were investigated: 0.05% Pd + 0.03% Mg + 0.05% Triton X-100 and 0.01% Pd + 10% NH4NO3 + 0.05% Triton X-100. The former one is recommended due to the higher pyrolysis temperature obtained for cadmium and the better limits of detection of 1.9 μg kg− 1 for lead and 0.13 μg kg− 1 for cadmium, based on 10 mg of sample mass. The results obtained for cadmium and lead in two certified reference materials were statistically not different from the certified values on a 95% confidence level, indicating that calibration against aqueous standards is suitable for this application. In order to evaluate weighing errors the fresh samples were dried (at 60 °C) to constant weight; the results obtained with fresh and dried samples were in agreement, taking the loss of weight into consideration for the latter ones. The average relative standard deviation of 14% is in concordance with the results of others using fresh meat. Comparison with the digestion method adopted by the Brazilian Ministry of Agriculture shows no significant differences between the results at the 95% confidence level. This study shows that direct analysis of fresh meet can be applied as a rapid routine screening procedure for residue control in products of animal origin, helping the implementation and maintenance of sanitary control.Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2014-01-21T11:08:19Z No. of bitstreams: 1 1-s2.0-S0584854707001565-main.pdf: 308184 bytes, checksum: ebfe293f3d539a73c9758861b38adac1 (MD5)Made available in DSpace on 2014-01-21T11:08:19Z (GMT). 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dc.title.pt_BR.fl_str_mv Feasibility of using direct determination of cadmium and lead in fresh meat by electrothermal atomic absorption spectrometry for screening purposes
dc.title.alternative.pt_BR.fl_str_mv Spectrochimica Acta Part B: Atomic Spectroscopy
title Feasibility of using direct determination of cadmium and lead in fresh meat by electrothermal atomic absorption spectrometry for screening purposes
spellingShingle Feasibility of using direct determination of cadmium and lead in fresh meat by electrothermal atomic absorption spectrometry for screening purposes
Damin, Isabel Cristina Ferreira
Lead
Cadmium
Fresh meat
Screening analysis
Electrothermal atomic absorption spectrometry
title_short Feasibility of using direct determination of cadmium and lead in fresh meat by electrothermal atomic absorption spectrometry for screening purposes
title_full Feasibility of using direct determination of cadmium and lead in fresh meat by electrothermal atomic absorption spectrometry for screening purposes
title_fullStr Feasibility of using direct determination of cadmium and lead in fresh meat by electrothermal atomic absorption spectrometry for screening purposes
title_full_unstemmed Feasibility of using direct determination of cadmium and lead in fresh meat by electrothermal atomic absorption spectrometry for screening purposes
title_sort Feasibility of using direct determination of cadmium and lead in fresh meat by electrothermal atomic absorption spectrometry for screening purposes
author Damin, Isabel Cristina Ferreira
author_facet Damin, Isabel Cristina Ferreira
Silva, Márcia M.
Vale, Maria Goreti R.
Welz, Bernhard
author_role author
author2 Silva, Márcia M.
Vale, Maria Goreti R.
Welz, Bernhard
author2_role author
author
author
dc.contributor.author.fl_str_mv Damin, Isabel Cristina Ferreira
Silva, Márcia M.
Vale, Maria Goreti R.
Welz, Bernhard
Damin, Isabel Cristina Ferreira
Silva, Márcia M.
Vale, Maria Goreti R.
Welz, Bernhard
dc.subject.por.fl_str_mv Lead
Cadmium
Fresh meat
Screening analysis
Electrothermal atomic absorption spectrometry
topic Lead
Cadmium
Fresh meat
Screening analysis
Electrothermal atomic absorption spectrometry
description Texto completo: acesso restrito. p. 1037-1045
publishDate 2007
dc.date.issued.fl_str_mv 2007
dc.date.accessioned.fl_str_mv 2014-01-21T11:08:19Z
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/14398
dc.identifier.issn.none.fl_str_mv 0584-8547
dc.identifier.number.pt_BR.fl_str_mv v. 62, n. 9
identifier_str_mv 0584-8547
v. 62, n. 9
url http://repositorio.ufba.br/ri/handle/ri/14398
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.sab.2007.05.007
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
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reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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