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dc.contributor.authorCHELEGAO, R.pt_BR
dc.contributor.authorCARIONI, V. M. O.pt_BR
dc.contributor.authorNAOZUKA, J.pt_BR
dc.contributor.authorNOMURA, C. S.pt_BR
dc.date.accessioned2016-12-21T11:11:11Zpt_BR
dc.date.available2016-12-21T11:11:11Zpt_BR
dc.date.created2016-12-21pt_BR
dc.date.issued2016pt_BR
dc.identifier.citationJournal of the Brazilian Chemical Society, vol. 27, N. 4, p. 712-718, abr. 2016.pt_BR
dc.identifier.issn0103-5053pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1059023pt_BR
dc.descriptionThis 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 °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 °C for 10 months. Total Hg mass fraction was 3.03 ± 0.22 μg g-1 by CV AAS, 2.99 ± 0.43 μg g-1 by SS-GF AAS and 2.95 ± 0.15 μg g-1 by direct mercury analyser (DMA). Methyl-Hg mass fraction was 2.49 ± 0.13 μg g-1 by CV AAS and 2.44 ± 0.46 μg g-1 by SS-GF AAS.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectReference materialpt_BR
dc.subjectTuna fishpt_BR
dc.subjectTotal Hgpt_BR
dc.subjectMethyl-Hgpt_BR
dc.titleFeasibility of Using AAS for the Characterization of a Tuna Fish Candidate Reference Material for Total Hg and Methyl-Hg Measurementpt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2016-12-21T11:11:11Zpt_BR
dc.subject.nalthesaurusAtomic absorption spectrometrypt_BR
riaa.ainfo.id1059023pt_BR
riaa.ainfo.lastupdate2016-12-21pt_BR
dc.identifier.doihttp://dx.doi.org/10.5935/0103-5053.20150320pt_BR
dc.contributor.institutionRODRIGO CHELEGAO, CPAMT; VIVIAN M. O. CARIONI, USP; JULIANA NAOZUKA, UNIFESP; CASSIANA S. NOMURA, USP.pt_BR
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