Determination of mercury in rice by MSFIA and cold vapour atomic fluorescence spectrometry
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , |
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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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). No. of bitstreams: 1 33333333333.pdf: 257798 bytes, checksum: 766a89c2fd9f06dd7f575ba9cd3ee0ef (MD5) Previous issue date: 2013SalvadorFood Chemistryhttp://dx.doi.org/10.1016/j.foodchem.2012.10.019reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAMercuryAtomic fluorescence spectrometryMultisyringeRiceDetermination of mercury in rice by MSFIA and cold vapour atomic fluorescence spectrometryFood Chemistryinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleenginfo:eu-repo/semantics/openAccessORIGINAL33333333333.pdf33333333333.pdfapplication/pdf257798https://repositorio.ufba.br/bitstream/ri/12061/1/33333333333.pdf766a89c2fd9f06dd7f575ba9cd3ee0efMD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/12061/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXT33333333333.pdf.txt33333333333.pdf.txtExtracted texttext/plain26612https://repositorio.ufba.br/bitstream/ri/12061/3/33333333333.pdf.txt047575c00b274607e5a9472432371711MD53ri/120612022-07-05 14:03:51.269oai:repositorio.ufba.br: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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 |
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 |
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Universidade Federal da Bahia (UFBA) |
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UFBA |
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UFBA |
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Repositório Institucional da UFBA |
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Repositório Institucional da UFBA |
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