Feasibility of Using AAS for the Characterization of a Tuna Fish Candidate Reference Material for Total Hg and Methyl-Hg Measurement

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dc.citation.issue4
dc.citation.volume27
dc.contributor.authorChelegao, Rodrigo
dc.contributor.authorCarioni, Vivian M. O.
dc.contributor.authorNaozuka, Juliana [UNIFESP]
dc.contributor.authorNomura, Cassiana S.
dc.coverageSao Paulo
dc.date.accessioned2020-07-22T13:23:14Z
dc.date.available2020-07-22T13:23:14Z
dc.date.issued2016
dc.description.abstractThis work describes the evaluation of several parameters for preparing a tuna fish candidate reference material (RM) in order to measure its total Hg and methyl-Hg mass fractions by cold vapor atomic absorption spectrometry (CV-AAS) and solid sampling graphite furnace atomic absorption spectrometry (SS-GF AAS). Best results were acquired after extraction with toluene and L-cysteine for 15 min at 80 degrees C. The parameters investigated were stability of chemical composition during production, homogeneity and analyte segregation. No analyte segregation was observed and the material was shown to be stable even when stored at 50 degrees C for 10 months. Total Hg mass fraction was 3.03 +/- 0.22 mu g g(-1) by CV AAS, 2.99 +/- 0.43 mu g g(-1) by SS-GF AAS and 2.95 +/- 0.15 mu g g(-1) by direct mercury analyser (DMA). Methyl-Hg mass fraction was 2.49 +/- 0.13 mu g g(-1) by CV AAS and 2.44 +/- 0.46 mu g g(-1) by SS-GF AAS.en
dc.description.affiliationEmbrapa Agrossilvipastoril, Ctr Pesquisas Agr, BR-78550970 Sinop, MT, Brazil
dc.description.affiliationUniv Sao Paulo, Inst Quim, BR-05508000 Sao Paulo, SP, Brazil
dc.description.affiliationUniv Fed Sao Paulo, Dept Ciencias Exatas & Terra, BR-09972270 Diadema, SP, Brazil
dc.description.affiliationUnifespUniv Fed Sao Paulo, Dept Ciencias Exatas & Terra, BR-09972270 Diadema, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipFundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
dc.description.sponsorshipIDFAPESP: 2007/56504-6
dc.description.sponsorshipIDFAPESP: 2012/11517-1
dc.description.sponsorshipIDFAPESP: 2012/11998-0
dc.format.extent712-718
dc.identifierhttp://dx.doi.org/10.5935/0103-5053.20150320
dc.identifier.citationJournal Of The Brazilian Chemical Society. Sao Paulo, v. 27, n. 4, p. 712-718, 2016.
dc.identifier.doi10.5935/0103-5053.20150320
dc.identifier.fileS0103-50532016000400712.pdf
dc.identifier.issn0103-5053
dc.identifier.scieloS0103-50532016000400712
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/56115
dc.identifier.wosWOS:000375086300009
dc.language.isoeng
dc.publisherSoc Brasileira Quimica
dc.relation.ispartofJournal Of The Brazilian Chemical Society
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectreference materialen
dc.subjecttuna fishen
dc.subjecttotal Hgen
dc.subjectmethyl-Hgen
dc.subjectatomic absorption spectrometryen
dc.titleFeasibility of Using AAS for the Characterization of a Tuna Fish Candidate Reference Material for Total Hg and Methyl-Hg Measurementen
dc.typeinfo:eu-repo/semantics/article
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