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Use este identificador para citar ou linkar para este item: https://repositorio.ufba.br/handle/ri/6425
Tipo: Artigo de Periódico
Título: Direct determination of iron and manganese in wine using the reference element technique and fast sequential multi-element flame atomic absorption spectrometry
Título(s) alternativo(s): Talanta
Autor(es): Ferreira, Sergio Luis Costa
Souza, Anderson Santos
Brandão, Geovani Cardoso
Ferreira, Hadla S.
Santos, Walter Nei Lopes dos
Pimentel, M. Fernanda
Vale, Maria Goreti R.
Autor(es): Ferreira, Sergio Luis Costa
Souza, Anderson Santos
Brandão, Geovani Cardoso
Ferreira, Hadla S.
Santos, Walter Nei Lopes dos
Pimentel, M. Fernanda
Vale, Maria Goreti R.
Abstract: A procedure is proposed for the direct determination of manganese and iron in wine employing fast sequential flame atomic absorption spectrometry and the reference element technique to correct for matrix effects. Cobalt, silver, nickel and indium have been tested as reference elements. The results demonstrated that cobalt and indium at a concentration of 2 and 10 mg L−1 were efficient for quantification of manganese and iron, respectively. Under these conditions, manganese and iron could be determined with quantification limits of 27 and 40 gL−1, respectively. The proposed method was applied to the determination of manganese and iron in 16 wine samples. The content of manganese varied from 0.78 to 2.89 mg L−1 and that of iron from 0.88 to 9.22 mg L−1. The analytical results were compared with those obtained by inductively coupled plasma optical emission spectrometry after complete mineralization using acid digestion. The statistical comparison by a t-test (95% confidence level) showed no significant difference between the results.
Palavras-chave: Wine
Reference element technique
Iron determination
Manganese determination
Matrix effects
Fast sequential flame atomic absorption spectrometry
URI: http://www.repositorio.ufba.br/ri/handle/ri/6425
Data do documento: 2008
Aparece nas coleções:Artigo Publicado em Periódico (Química)

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