Simultaneous determination of two groups of elements in milk by electrothermal atomic absorption spectrometry: Evaluation of ruthenium modifiers

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversldade Federal da Grande Dourados-
Autor(es): dc.contributorUniversidade Estad.ual Paulista-
Autor(es): dc.creatorFreschi, Gian Paulo G.-
Autor(es): dc.creatorFreschi, Carolina D.-
Autor(es): dc.creatorNeto, José Anchieta Gomes-
Data de aceite: dc.date.accessioned2022-08-04T22:02:00Z-
Data de disponibilização: dc.date.available2022-08-04T22:02:00Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2009-11-27-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/219533-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/219533-
Descrição: dc.descriptionDifferent kinds of ruthenium coatings are proposed as chemical modifiers for the simultaneous determination of two groups of elements: first, the more volatile elements such as As, Bi, Pb, Sb, and Se and, second, the elements Co. Cr, Cu, Fe, and Mn in milk samples by electrothermal atomic absorption spectrometry. Uncoated and coated platforms lube with Ru modifiers and co-injection of Pd+Mg were studied. Milk samples were 1+9 diluted in 1.0% (v/v) HMO3 and injected into the tube. Very long tube lifetimes were obtained for the two groups with around 750 cycles for the direct determination of the diluted milk sample. Platforms, prelrealed with W-Ru, were selected for the first group and pre treated platforms with W plus RuCl3 were selected for the second group. Calibration by matrix matching and analytical curves in the 5.0-20.0 μg L-1 range with good linear correlation coefficients were obtained. Relative standard deviations were 7.2% and the calculated characteristic masses were between 7.2 pg and 89.1 pg. The limits of detection obtained for undiluted milk samples were as follows: For Group 1 elements: 32 μg L3 for As; 36 μg L-1 for Bi; 29 μg L-1 for Se; 29 μg L-1 for Sb; 25 μg L -1 for Pb; 18 μg L-1 for Co. For Group 2 elements: 13 μg L-1 for Cr; 16 μg L-1 for Cu; 53 μg L -1 for Fe: 20 μg L-1 for Mn.-
Descrição: dc.descriptionFaeuldade de Ciênelas Exatas e Tecnoiogia Universldade Federal da Grande Dourados, P.O. Box 332, 79-804-970, Dourados-MS-
Descrição: dc.descriptionInstitute de Química Universidade Estad.ual Paulista, P.O. Box 355, 14801-970 Araraquara-SP-
Formato: dc.format147-155-
Idioma: dc.languageen-
Relação: dc.relationAtomic Spectroscopy-
???dc.source???: dc.sourceScopus-
Título: dc.titleSimultaneous determination of two groups of elements in milk by electrothermal atomic absorption spectrometry: Evaluation of ruthenium modifiers-
Tipo de arquivo: dc.typelivro digital-
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