Optimization of a centrifugation and ultrasound-assisted procedure for the determination of trace and major elements in marine invertebrates by ICP OES

Detalhes bibliográficos
Autor(a) principal: Santos, Wagna P. C. dos
Data de Publicação: 2010
Outros Autores: Hatje, Vanessa, Santil, Darlan da S., Fernandes, Andréa Pires, Korn, Maria das Graças Andrade, Souza, Manuel M. de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/5690
Resumo: Acesso restrito: Texto completo. p .169-173.
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spelling Santos, Wagna P. C. dosHatje, VanessaSantil, Darlan da S.Fernandes, Andréa PiresKorn, Maria das Graças AndradeSouza, Manuel M. deSantos, Wagna P. C. dosHatje, VanessaSantil, Darlan da S.Fernandes, Andréa PiresKorn, Maria das Graças AndradeSouza, Manuel M. de2012-04-20T13:40:41Z2010-070026-265Xhttp://www.repositorio.ufba.br/ri/handle/ri/5690v. 95, n. 2Acesso restrito: Texto completo. p .169-173.A three factor Doehlert design was applied to optimize the extraction of elements in marine invertebrate samples (oyster, mussel and clam) using centrifugation with diluted acids. The factors were: concentration of acid mixture (HCl+HNO3+H3CCOOH; 1–3 mol L−1), centrifugation time (10–40 min), and rotation velocity (6000–10,000 rpm). In order to evaluate the ultrasound effect on the extraction of trace metals, a portion of the certified oyster tissue sample (NIST 1556b; 0.250 g) was sonicated for 15 min and then the solution was centrifuged at the optimized conditions. The optimized procedure was then applied to nine marine invertebrate samples (oysters, clams and mussels) collected at Todos os Santos Bay, Bahia, Brazil. The optimized condition of the developed method was: 20 min of centrifugation at 9000 rpm using the acid mixture 1.0 mol L−1. The effect of sonication prior centrifugation was very variable, but it promoted a significant increase in the extraction (12 to 44%) of some trace elements. Moreover, the combination of the centrifugation with sonication offered other advantages, such as improvement of the precision and accuracy, both demonstrated using the oyster tissue reference sample. The results of major and trace elements in marine invertebrate samples showed that elements such us Cd and Cu in oyster samples and Zn in mussel and clam samples were above recommendations, suggesting that its consumption may impose health risks.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-04-20T13:40:41Z No. of bitstreams: 1 __ac.els-cdn.com_S002626...e0c85e78495442becb0b68232ae02.pdf: 176561 bytes, checksum: 4ab0f38151f1671f7b4a3541fc1d879e (MD5)Made available in DSpace on 2012-04-20T13:40:41Z (GMT). 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dc.title.pt_BR.fl_str_mv Optimization of a centrifugation and ultrasound-assisted procedure for the determination of trace and major elements in marine invertebrates by ICP OES
dc.title.alternative.pt_BR.fl_str_mv Microchemical Journal
title Optimization of a centrifugation and ultrasound-assisted procedure for the determination of trace and major elements in marine invertebrates by ICP OES
spellingShingle Optimization of a centrifugation and ultrasound-assisted procedure for the determination of trace and major elements in marine invertebrates by ICP OES
Santos, Wagna P. C. dos
Centrifugation
Sonication
ICP OES
Trace elements
Marine invertebrate
Todos os Santos Bay A
title_short Optimization of a centrifugation and ultrasound-assisted procedure for the determination of trace and major elements in marine invertebrates by ICP OES
title_full Optimization of a centrifugation and ultrasound-assisted procedure for the determination of trace and major elements in marine invertebrates by ICP OES
title_fullStr Optimization of a centrifugation and ultrasound-assisted procedure for the determination of trace and major elements in marine invertebrates by ICP OES
title_full_unstemmed Optimization of a centrifugation and ultrasound-assisted procedure for the determination of trace and major elements in marine invertebrates by ICP OES
title_sort Optimization of a centrifugation and ultrasound-assisted procedure for the determination of trace and major elements in marine invertebrates by ICP OES
author Santos, Wagna P. C. dos
author_facet Santos, Wagna P. C. dos
Hatje, Vanessa
Santil, Darlan da S.
Fernandes, Andréa Pires
Korn, Maria das Graças Andrade
Souza, Manuel M. de
author_role author
author2 Hatje, Vanessa
Santil, Darlan da S.
Fernandes, Andréa Pires
Korn, Maria das Graças Andrade
Souza, Manuel M. de
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Santos, Wagna P. C. dos
Hatje, Vanessa
Santil, Darlan da S.
Fernandes, Andréa Pires
Korn, Maria das Graças Andrade
Souza, Manuel M. de
Santos, Wagna P. C. dos
Hatje, Vanessa
Santil, Darlan da S.
Fernandes, Andréa Pires
Korn, Maria das Graças Andrade
Souza, Manuel M. de
dc.subject.por.fl_str_mv Centrifugation
Sonication
ICP OES
Trace elements
Marine invertebrate
Todos os Santos Bay A
topic Centrifugation
Sonication
ICP OES
Trace elements
Marine invertebrate
Todos os Santos Bay A
description Acesso restrito: Texto completo. p .169-173.
publishDate 2010
dc.date.issued.fl_str_mv 2010-07
dc.date.accessioned.fl_str_mv 2012-04-20T13:40:41Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/5690
dc.identifier.issn.none.fl_str_mv 0026-265X
dc.identifier.number.pt_BR.fl_str_mv v. 95, n. 2
identifier_str_mv 0026-265X
v. 95, n. 2
url http://www.repositorio.ufba.br/ri/handle/ri/5690
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 DOI: 10.1016/j.microc.2009.11.004
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
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