Method development for the determination of manganese, cobalt and copper in green coffee comparing direct solid sampling electrothermal atomic absorption spectrometry and inductively coupled plasma optical emission spectrometry

Detalhes bibliográficos
Autor(a) principal: Oleszczuk, Nédio
Data de Publicação: 2007
Outros Autores: Castro, Jacira T., Silva, Márcia M. da, Korn, Maria das Graças Andrade, Welz, Bernhard, Vale, Maria Goreti R.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/14330
Resumo: Texto completo: acesso restrito. p. 862-869
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spelling Oleszczuk, NédioCastro, Jacira T.Silva, Márcia M. daKorn, Maria das Graças AndradeWelz, BernhardVale, Maria Goreti R.Oleszczuk, NédioCastro, Jacira T.Silva, Márcia M. daKorn, Maria das Graças AndradeWelz, BernhardVale, Maria Goreti R.2014-01-13T13:38:51Z20070039-9140http://repositorio.ufba.br/ri/handle/ri/14330v. 73, n. 5Texto completo: acesso restrito. p. 862-869A method has been developed for the determination of cobalt, copper and manganese in green coffee using direct solid sampling electrothermal atomic absorption spectrometry (SS-ET AAS). The motivation for the study was that only a few elements might be suitable to determine the origin of green coffee so that the multi-element techniques usually applied for this purpose might not be necessary. The three elements have been chosen as test elements as they were found to be significant in previous investigations. A number of botanical certified reference materials (CRM) and pre-analyzed samples of green coffee have been used for method validation, and inductively coupled plasma optical emission spectrometry (ICP OES) after microwave-assisted acid digestion of the samples as reference method. Calibration against aqueous standards could be used for the determination of Mn and Co by SS-ET AAS, but calibration against solid CRM was necessary for the determination of Cu. No significant difference was found between the results obtained with the proposed method and certified or independently determined values. The limits of detection for Mn, Cu and Co were 0.012, 0.006 and 0.004 μg g−1 using SS-ET AAS and 0.015, 0.13 and 0.10 μg g−1 using ICP OES. Seven samples of Brazilian green coffee have been analyzed, and there was no significant difference between the values obtained with SS-ET AAS and ICP OES for Mn and Cu. ICP OES could not be used as a reference method for Co, as essentially all values were below the limit of quantification of this technique.Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2014-01-13T13:38:51Z No. of bitstreams: 1 1-s2.0-S003991400700361X-main.pdf: 162432 bytes, checksum: 6775b38936620f3bbf170df589d2ca67 (MD5)Made available in DSpace on 2014-01-13T13:38:51Z (GMT). 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dc.title.pt_BR.fl_str_mv Method development for the determination of manganese, cobalt and copper in green coffee comparing direct solid sampling electrothermal atomic absorption spectrometry and inductively coupled plasma optical emission spectrometry
dc.title.alternative.pt_BR.fl_str_mv Talanta
title Method development for the determination of manganese, cobalt and copper in green coffee comparing direct solid sampling electrothermal atomic absorption spectrometry and inductively coupled plasma optical emission spectrometry
spellingShingle Method development for the determination of manganese, cobalt and copper in green coffee comparing direct solid sampling electrothermal atomic absorption spectrometry and inductively coupled plasma optical emission spectrometry
Oleszczuk, Nédio
Electrothermal atomic absorption spectrometry
Inductively coupled plasma optical emission spectrometry
Solid sampling
Coffee
Cobalt
Copper
Manganese
title_short Method development for the determination of manganese, cobalt and copper in green coffee comparing direct solid sampling electrothermal atomic absorption spectrometry and inductively coupled plasma optical emission spectrometry
title_full Method development for the determination of manganese, cobalt and copper in green coffee comparing direct solid sampling electrothermal atomic absorption spectrometry and inductively coupled plasma optical emission spectrometry
title_fullStr Method development for the determination of manganese, cobalt and copper in green coffee comparing direct solid sampling electrothermal atomic absorption spectrometry and inductively coupled plasma optical emission spectrometry
title_full_unstemmed Method development for the determination of manganese, cobalt and copper in green coffee comparing direct solid sampling electrothermal atomic absorption spectrometry and inductively coupled plasma optical emission spectrometry
title_sort Method development for the determination of manganese, cobalt and copper in green coffee comparing direct solid sampling electrothermal atomic absorption spectrometry and inductively coupled plasma optical emission spectrometry
author Oleszczuk, Nédio
author_facet Oleszczuk, Nédio
Castro, Jacira T.
Silva, Márcia M. da
Korn, Maria das Graças Andrade
Welz, Bernhard
Vale, Maria Goreti R.
author_role author
author2 Castro, Jacira T.
Silva, Márcia M. da
Korn, Maria das Graças Andrade
Welz, Bernhard
Vale, Maria Goreti R.
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Oleszczuk, Nédio
Castro, Jacira T.
Silva, Márcia M. da
Korn, Maria das Graças Andrade
Welz, Bernhard
Vale, Maria Goreti R.
Oleszczuk, Nédio
Castro, Jacira T.
Silva, Márcia M. da
Korn, Maria das Graças Andrade
Welz, Bernhard
Vale, Maria Goreti R.
dc.subject.por.fl_str_mv Electrothermal atomic absorption spectrometry
Inductively coupled plasma optical emission spectrometry
Solid sampling
Coffee
Cobalt
Copper
Manganese
topic Electrothermal atomic absorption spectrometry
Inductively coupled plasma optical emission spectrometry
Solid sampling
Coffee
Cobalt
Copper
Manganese
description Texto completo: acesso restrito. p. 862-869
publishDate 2007
dc.date.issued.fl_str_mv 2007
dc.date.accessioned.fl_str_mv 2014-01-13T13:38:51Z
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/14330
dc.identifier.issn.none.fl_str_mv 0039-9140
dc.identifier.number.pt_BR.fl_str_mv v. 73, n. 5
identifier_str_mv 0039-9140
v. 73, n. 5
url http://repositorio.ufba.br/ri/handle/ri/14330
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.talanta.2007.05.005
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
instacron:UFBA
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instacron_str UFBA
institution UFBA
reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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