Method development and optimization for the determination of selenium in bean and soil samples using hydride generation electrothermal atomic absorption spectrometry

Detalhes bibliográficos
Autor(a) principal: Welz, Bernhard
Data de Publicação: 2011
Outros Autores: Shaltout, Abdallah A., Castilho, Ivan N. B., Carasek, Eduardo, Gonzaga Martens, Irland B., Martens, Andreas, Cozzolino, Silvia M.F.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/14702
Resumo: Texto completo: acesso restrito. p. 1350–1356
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spelling Welz, BernhardShaltout, Abdallah A.Castilho, Ivan N. B.Carasek, EduardoGonzaga Martens, Irland B.Martens, AndreasCozzolino, Silvia M.F.Welz, BernhardShaltout, Abdallah A.Castilho, Ivan N. B.Carasek, EduardoGonzaga Martens, Irland B.Martens, AndreasCozzolino, Silvia M.F.2014-02-25T11:01:32Z20110039-9140http://repositorio.ufba.br/ri/handle/ri/14702v. 85, n. 3Texto completo: acesso restrito. p. 1350–1356The present investigation is the first part of an initiative to prepare a regional map of the natural abundance of selenium in various areas of Brazil, based on the analysis of bean and soil samples. Continuous-flow hydride generation electrothermal atomic absorption spectrometry (HG-ET AAS) with in situ trapping on an iridium-coated graphite tube has been chosen because of the high sensitivity and relative simplicity. The microwave-assisted acid digestion for bean and soil samples was tested for complete recovery of inorganic and organic selenium compounds (selenomethionine). The reduction of Se(VI) to Se(IV) was optimized in order to guarantee that there is no back-oxidation, which is of importance when digested samples are not analyzed immediately after the reduction step. The limits of detection and quantification of the method were 30 ng L−1 Se and 101 ng L−1 Se, respectively, corresponding to about 3 ng g−1 and 10 ng g−1, respectively, in the solid samples, considering a typical dilution factor of 100 for the digestion process. The results obtained for two certified food reference materials (CRM), soybean and rice, and for a soil and sediment CRM confirmed the validity of the investigated method. The selenium content found in a number of selected bean samples varied between 5.5 ± 0.4 ng g−1 and 1726 ± 55 ng g−1, and that in soil samples varied between 113 ± 6.5 ng g−1 and 1692 ± 21 ng g−1.Submitted by Edileide Reis (leyde-landy@hotmail.com) on 2014-02-25T11:01:32Z No. of bitstreams: 1 Bernhard Welz.pdf: 877260 bytes, checksum: 2323a5993edc1be1cfd913a07e05ac56 (MD5)Made available in DSpace on 2014-02-25T11:01:32Z (GMT). No. of bitstreams: 1 Bernhard Welz.pdf: 877260 bytes, checksum: 2323a5993edc1be1cfd913a07e05ac56 (MD5) Previous issue date: 2011http://dx.doi.org/10.1016/j.talanta.2011.06.015reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBASeleniumHydride generation-electrothermal AASIridium trappingBean samplesSoil samplesMethod development and optimization for the determination of selenium in bean and soil samples using hydride generation electrothermal atomic absorption spectrometryTalantainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINALBernhard Welz.pdfBernhard Welz.pdfapplication/pdf877260https://repositorio.ufba.br/bitstream/ri/14702/1/Bernhard%20Welz.pdf2323a5993edc1be1cfd913a07e05ac56MD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/14702/2/license.txtff6eaa8b858ea317fded99f125f5fcd0MD52TEXTBernhard Welz.pdf.txtBernhard Welz.pdf.txtExtracted texttext/plain39705https://repositorio.ufba.br/bitstream/ri/14702/3/Bernhard%20Welz.pdf.txt275eb778626a1f9ce05491bc9a62a8f1MD53ri/147022022-07-05 14:03:51.373oai:repositorio.ufba.br:ri/14702VGVybW8gZGUgTGljZW7vv71hLCBu77+9byBleGNsdXNpdm8sIHBhcmEgbyBkZXDvv71zaXRvIG5vIFJlcG9zaXTvv71yaW8gSW5zdGl0dWNpb25hbCBkYSBVRkJBLgoKIFBlbG8gcHJvY2Vzc28gZGUgc3VibWlzc++/vW8gZGUgZG9jdW1lbnRvcywgbyBhdXRvciBvdSBzZXUgcmVwcmVzZW50YW50ZSBsZWdhbCwgYW8gYWNlaXRhciAKZXNzZSB0ZXJtbyBkZSBsaWNlbu+/vWEsIGNvbmNlZGUgYW8gUmVwb3NpdO+/vXJpbyBJbnN0aXR1Y2lvbmFsIGRhIFVuaXZlcnNpZGFkZSBGZWRlcmFsIGRhIEJhaGlhIApvIGRpcmVpdG8gZGUgbWFudGVyIHVtYSBj77+9cGlhIGVtIHNldSByZXBvc2l077+9cmlvIGNvbSBhIGZpbmFsaWRhZGUsIHByaW1laXJhLCBkZSBwcmVzZXJ2Ye+/ve+/vW8uIApFc3NlcyB0ZXJtb3MsIG7vv71vIGV4Y2x1c2l2b3MsIG1hbnTvv71tIG9zIGRpcmVpdG9zIGRlIGF1dG9yL2NvcHlyaWdodCwgbWFzIGVudGVuZGUgbyBkb2N1bWVudG8gCmNvbW8gcGFydGUgZG8gYWNlcnZvIGludGVsZWN0dWFsIGRlc3NhIFVuaXZlcnNpZGFkZS4KCiBQYXJhIG9zIGRvY3VtZW50b3MgcHVibGljYWRvcyBjb20gcmVwYXNzZSBkZSBkaXJlaXRvcyBkZSBkaXN0cmlidWnvv73vv71vLCBlc3NlIHRlcm1vIGRlIGxpY2Vu77+9YSAKZW50ZW5kZSBxdWU6CgogTWFudGVuZG8gb3MgZGlyZWl0b3MgYXV0b3JhaXMsIHJlcGFzc2Fkb3MgYSB0ZXJjZWlyb3MsIGVtIGNhc28gZGUgcHVibGljYe+/ve+/vWVzLCBvIHJlcG9zaXTvv71yaW8KcG9kZSByZXN0cmluZ2lyIG8gYWNlc3NvIGFvIHRleHRvIGludGVncmFsLCBtYXMgbGliZXJhIGFzIGluZm9ybWHvv73vv71lcyBzb2JyZSBvIGRvY3VtZW50bwooTWV0YWRhZG9zIGVzY3JpdGl2b3MpLgoKIERlc3RhIGZvcm1hLCBhdGVuZGVuZG8gYW9zIGFuc2Vpb3MgZGVzc2EgdW5pdmVyc2lkYWRlIGVtIG1hbnRlciBzdWEgcHJvZHXvv73vv71vIGNpZW5077+9ZmljYSBjb20gCmFzIHJlc3Ryae+/ve+/vWVzIGltcG9zdGFzIHBlbG9zIGVkaXRvcmVzIGRlIHBlcmnvv71kaWNvcy4KCiBQYXJhIGFzIHB1YmxpY2Hvv73vv71lcyBzZW0gaW5pY2lhdGl2YXMgcXVlIHNlZ3VlbSBhIHBvbO+/vXRpY2EgZGUgQWNlc3NvIEFiZXJ0bywgb3MgZGVw77+9c2l0b3MgCmNvbXB1bHPvv71yaW9zIG5lc3NlIHJlcG9zaXTvv71yaW8gbWFudO+/vW0gb3MgZGlyZWl0b3MgYXV0b3JhaXMsIG1hcyBtYW5077+9bSBhY2Vzc28gaXJyZXN0cml0byAKYW8gbWV0YWRhZG9zIGUgdGV4dG8gY29tcGxldG8uIEFzc2ltLCBhIGFjZWl0Ye+/ve+/vW8gZGVzc2UgdGVybW8gbu+/vW8gbmVjZXNzaXRhIGRlIGNvbnNlbnRpbWVudG8KIHBvciBwYXJ0ZSBkZSBhdXRvcmVzL2RldGVudG9yZXMgZG9zIGRpcmVpdG9zLCBwb3IgZXN0YXJlbSBlbSBpbmljaWF0aXZhcyBkZSBhY2Vzc28gYWJlcnRvLgo=Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:51Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Method development and optimization for the determination of selenium in bean and soil samples using hydride generation electrothermal atomic absorption spectrometry
dc.title.alternative.pt_BR.fl_str_mv Talanta
title Method development and optimization for the determination of selenium in bean and soil samples using hydride generation electrothermal atomic absorption spectrometry
spellingShingle Method development and optimization for the determination of selenium in bean and soil samples using hydride generation electrothermal atomic absorption spectrometry
Welz, Bernhard
Selenium
Hydride generation-electrothermal AAS
Iridium trapping
Bean samples
Soil samples
title_short Method development and optimization for the determination of selenium in bean and soil samples using hydride generation electrothermal atomic absorption spectrometry
title_full Method development and optimization for the determination of selenium in bean and soil samples using hydride generation electrothermal atomic absorption spectrometry
title_fullStr Method development and optimization for the determination of selenium in bean and soil samples using hydride generation electrothermal atomic absorption spectrometry
title_full_unstemmed Method development and optimization for the determination of selenium in bean and soil samples using hydride generation electrothermal atomic absorption spectrometry
title_sort Method development and optimization for the determination of selenium in bean and soil samples using hydride generation electrothermal atomic absorption spectrometry
author Welz, Bernhard
author_facet Welz, Bernhard
Shaltout, Abdallah A.
Castilho, Ivan N. B.
Carasek, Eduardo
Gonzaga Martens, Irland B.
Martens, Andreas
Cozzolino, Silvia M.F.
author_role author
author2 Shaltout, Abdallah A.
Castilho, Ivan N. B.
Carasek, Eduardo
Gonzaga Martens, Irland B.
Martens, Andreas
Cozzolino, Silvia M.F.
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Welz, Bernhard
Shaltout, Abdallah A.
Castilho, Ivan N. B.
Carasek, Eduardo
Gonzaga Martens, Irland B.
Martens, Andreas
Cozzolino, Silvia M.F.
Welz, Bernhard
Shaltout, Abdallah A.
Castilho, Ivan N. B.
Carasek, Eduardo
Gonzaga Martens, Irland B.
Martens, Andreas
Cozzolino, Silvia M.F.
dc.subject.por.fl_str_mv Selenium
Hydride generation-electrothermal AAS
Iridium trapping
Bean samples
Soil samples
topic Selenium
Hydride generation-electrothermal AAS
Iridium trapping
Bean samples
Soil samples
description Texto completo: acesso restrito. p. 1350–1356
publishDate 2011
dc.date.issued.fl_str_mv 2011
dc.date.accessioned.fl_str_mv 2014-02-25T11:01:32Z
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/14702
dc.identifier.issn.none.fl_str_mv 0039-9140
dc.identifier.number.pt_BR.fl_str_mv v. 85, n. 3
identifier_str_mv 0039-9140
v. 85, n. 3
url http://repositorio.ufba.br/ri/handle/ri/14702
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.2011.06.015
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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reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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