Determination of mercury in rice by MSFIA and cold vapour atomic fluorescence spectrometry

Detalhes bibliográficos
Autor(a) principal: Silva, Douglas Gonçalves da
Data de Publicação: 2013
Outros Autores: Portugal, Lindomar Andrade, Serra, Antonio M., Ferreira, Sergio Luis Costa, Cerdà, Victor
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/12061
Resumo: Texto completo. Acesso restrito. p. 159–163
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spelling Silva, Douglas Gonçalves daPortugal, Lindomar AndradeSerra, Antonio M.Ferreira, Sergio Luis CostaCerdà, VictorSilva, Douglas Gonçalves daPortugal, Lindomar AndradeSerra, Antonio M.Ferreira, Sergio Luis CostaCerdà, Victor2013-07-01T18:07:55Z2013-07-01T18:07:55Z20130308-8146http://www.repositorio.ufba.br/ri/handle/ri/12061v. 137, n. 1–4Texto completo. Acesso restrito. p. 159–163In the present paper the use of a MSFIA system for determination of mercury in rice by cold vapour atomic fluorescence spectrometry (CV AFS) is proposed. The sample digestion is performed in a microwave oven using nitric acid and hydrogen peroxide. The experimental conditions for vapour generation were determined using a full two-level factorial design involving the following factors: nitric acid and tin chloride concentrations and sample flow rate. Employing the conditions optimised, the method allows the determination of mercury using the external calibration technique with aqueous standards. The reached limits of detection and quantification were 0.48 and 1.61 ng g 1 respectively, and the precision (as relative standard deviation) was 3.28% and 1.56% for rice samples with a mercury content of 3.63 and 5.81 ng g 1, respectively. The method accuracy was confirmed analysing a certified reference material of rice flour furnished by National Institute of Standard and Technology. The interference of nitrous acid and nitrous oxides are removed using potassium dichromate. The method was applied to mercury determination in twelve rice samples acquired in Palma de Mallorca (Spain) between the months of January and April of 2012. The mercury content found varied from 2.15 to 7.25 ng g 1. These results agree with those reported by others authors.Submitted by Santiago Fabio (fabio.ssantiago@hotmail.com) on 2013-07-01T18:07:55Z No. of bitstreams: 1 33333333333.pdf: 257798 bytes, checksum: 766a89c2fd9f06dd7f575ba9cd3ee0ef (MD5)Made available in DSpace on 2013-07-01T18:07:55Z (GMT). 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dc.title.pt_BR.fl_str_mv Determination of mercury in rice by MSFIA and cold vapour atomic fluorescence spectrometry
dc.title.alternative.pt_BR.fl_str_mv Food Chemistry
title Determination of mercury in rice by MSFIA and cold vapour atomic fluorescence spectrometry
spellingShingle Determination of mercury in rice by MSFIA and cold vapour atomic fluorescence spectrometry
Silva, Douglas Gonçalves da
Mercury
Atomic fluorescence spectrometry
Multisyringe
Rice
title_short Determination of mercury in rice by MSFIA and cold vapour atomic fluorescence spectrometry
title_full Determination of mercury in rice by MSFIA and cold vapour atomic fluorescence spectrometry
title_fullStr Determination of mercury in rice by MSFIA and cold vapour atomic fluorescence spectrometry
title_full_unstemmed Determination of mercury in rice by MSFIA and cold vapour atomic fluorescence spectrometry
title_sort Determination of mercury in rice by MSFIA and cold vapour atomic fluorescence spectrometry
author Silva, Douglas Gonçalves da
author_facet Silva, Douglas Gonçalves da
Portugal, Lindomar Andrade
Serra, Antonio M.
Ferreira, Sergio Luis Costa
Cerdà, Victor
author_role author
author2 Portugal, Lindomar Andrade
Serra, Antonio M.
Ferreira, Sergio Luis Costa
Cerdà, Victor
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Silva, Douglas Gonçalves da
Portugal, Lindomar Andrade
Serra, Antonio M.
Ferreira, Sergio Luis Costa
Cerdà, Victor
Silva, Douglas Gonçalves da
Portugal, Lindomar Andrade
Serra, Antonio M.
Ferreira, Sergio Luis Costa
Cerdà, Victor
dc.subject.por.fl_str_mv Mercury
Atomic fluorescence spectrometry
Multisyringe
Rice
topic Mercury
Atomic fluorescence spectrometry
Multisyringe
Rice
description Texto completo. Acesso restrito. p. 159–163
publishDate 2013
dc.date.accessioned.fl_str_mv 2013-07-01T18:07:55Z
dc.date.available.fl_str_mv 2013-07-01T18:07:55Z
dc.date.issued.fl_str_mv 2013
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/12061
dc.identifier.issn.none.fl_str_mv 0308-8146
dc.identifier.number.pt_BR.fl_str_mv v. 137, n. 1–4
identifier_str_mv 0308-8146
v. 137, n. 1–4
url http://www.repositorio.ufba.br/ri/handle/ri/12061
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.publisher.none.fl_str_mv Food Chemistry
publisher.none.fl_str_mv Food Chemistry
dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/j.foodchem.2012.10.019
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
instacron:UFBA
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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