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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
06/04/2020 |
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Data da última atualização: |
20/04/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MIHAI, O.; KAWAMOTO, M. S.; LEBLANC, K. L.; GRINBERG, P.; NOGUEIRA, A. R. de A.; MESTER, Z. |
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Afiliação: |
Ovidiu Mihai, National Research Council Canada; Mayumi S. Kawamoto, National Research Council Canada; Kelly L. LeBlanc, National Research Council Canada; Patricia Grinberg, National Research Council Canada; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; Zoltán Mester, National Research Council Canada. |
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Título: |
Determination of chromium picolinate and trace hexavalent chromium in multivitamins and supplements by HPLC-ICP-QQQ-MS. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Journal of Food Composition and Analysis, v. 87, 2020, 103421. |
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ISSN: |
0889-1575 |
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DOI: |
https://doi.org/10.1016/j.jfca.2020.103421 |
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Idioma: |
Inglês |
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Conteúdo: |
Chromium picolinate (CrPic) and trace hexavalent chromium (Cr(VI)) content were characterized in VITA-1 and VITB-1, two new multivitamin and mineral supplement candidate reference materials from National Research Council Canada, by two methods of high performance liquid chromatography inductively-coupled plasma triple quadrupole mass spectrometry. The conditions for the separation of Cr(VI) from EDTA-complexed Cr(III) were optimized such that species interconversions were not observed during analysis. Following extraction with dilute NH4OH in water at pH 10 (for Cr(VI)) or 3:2 acetonitrile:water (for CrPic) and quantification by standard addition, it was concluded that CrPic accounted for 95?96 % of the Cr in VITA-1 and VITB-1, while Cr(VI) was not present above the detection limit of 0.13 ?g Cr g?1. Using the two developed methodologies, commerciallyavailable nutritional supplements, in the form of vitamin tablets and dried food supplements, were assessed, and it was determined that CrPic accounted for the majority (92 %?98 %) of the chromium present in the tablets, and that Cr(VI) concentrations were below the detection limit for all samples except for the powdered beets where it accounted for nearly half of the total Cr present. |
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Palavras-Chave: |
Chromium picolinate; Hexavalent chromium; Inductively coupled plasma mass spectrometry. |
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Thesaurus Nal: |
High performance liquid chromatography; Ion exchange chromatography. |
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Categoria do assunto: |
W Química e Física |
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Marc: |
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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| 1. |  | DUDA, N. C. B.; VALLE, S. de F.; MATHEUS, J. P.; ANGELI, N. C.; VIEIRA, L. C.; OLIVEIRA, L. O.; SONNE, L.; González, F. H. D. Paraneoplastic hematological, biochemical, and hemostatic abnormalities in female dogs with mammary neoplasms. Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 37, n. 5, p. 479-484, maio 2017. Título em português: Anormalidades hematológicas, bioquímicas e hemostáticas de origem paraneoplásica em fêmeas caninas com neoplasia mamária.| Biblioteca(s): Embrapa Unidades Centrais. |
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