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Use este identificador para citar ou linkar para este item: https://repositorio.ufba.br/handle/ri/14728
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dc.contributor.authorFernandes, Andréa Pires-
dc.contributor.authorNunes, Luana Sena-
dc.contributor.authorBarbosa, José Tiago Pereira-
dc.contributor.authorLemos, Valfredo Azevedo-
dc.contributor.authorSantos, Walter Nei Lopes dos-
dc.contributor.authorKorn, Maria das Graças Andrade-
dc.contributor.authorTeixeira, Leonardo Sena Gomes-
dc.creatorFernandes, Andréa Pires-
dc.creatorNunes, Luana Sena-
dc.creatorBarbosa, José Tiago Pereira-
dc.creatorLemos, Valfredo Azevedo-
dc.creatorSantos, Walter Nei Lopes dos-
dc.creatorKorn, Maria das Graças Andrade-
dc.creatorTeixeira, Leonardo Sena Gomes-
dc.date.accessioned2014-03-12T14:17:59Z-
dc.date.issued2011-
dc.identifier.issn0308-8146-
dc.identifier.urihttp://repositorio.ufba.br/ri/handle/ri/14728-
dc.descriptionTexto completo: acesso restrito. p. 780–783pt_BR
dc.description.abstractThe aim of this work was to evaluate the microemulsification as sample preparation procedure for determination of Cu, Fe, Ni and Zn in vegetable oils samples by High-Resolution Continuum Source Flame Atomic Absorption Spectrometry (HR-CS FAAS). Microemulsions were prepared by mixing samples with propan-1-ol and aqueous acid solution, which allowed the use of inorganic aqueous standards for the calibration. To a sample mass of 0.5 g, 100 μL of hydrochloric acid and propan-1-ol were added and the resulting mixture diluted to a final volume of 10 mL. The sample was manually shaken resulting in a visually homogeneous system. The main lines were selected for all studied metals and the detection limits (3σ, n = 10) were 0.12, 0.62, 0.58 and 0.12 mg kg−1 for Cu, Fe, Ni and Zn, respectively. The relative standard deviation (RSD) ranged from 5% to 11 % in samples spiked with 0.25 and 1.5 μg mL−1 of each metal, respectively. Recoveries varied from 89% to 102%. The proposed method was applied to the determination of Cu, Fe, Ni and Zn in soybean, olive and sunflower oils.pt_BR
dc.language.isoenpt_BR
dc.rightsAcesso Abertopt_BR
dc.sourcehttp://dx.doi.org.ez10.periodicos.capes.gov.br/10.1016/j.foodchem.2010.12.147pt_BR
dc.subjectMetals analysispt_BR
dc.subjectVegetable oilpt_BR
dc.subjectHR-CS FAASpt_BR
dc.titleMulti-element determination of Cu, Fe, Ni and Zn content in vegetable oils samples by high-resolution continuum source atomic absorption spectrometry and microemulsion sample preparationpt_BR
dc.title.alternativeFood Chemistrypt_BR
dc.typeArtigo de Periódicopt_BR
dc.identifier.numberv. 127, n. 2pt_BR
dc.embargo.liftdate10000-01-01-
Aparece nas coleções:Artigo Publicado em Periódico (Química)

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