https://repositorio.ufba.br/handle/ri/6183
Tipo: | Artigo de Periódico |
Título: | Simultaneous Determination of Cd and Fe in Beans and Soil of Different Regions of Brazil Using High-Resolution Continuum Source Graphite Furnace Atomic Absorption Spectrometry and Direct Solid Sampling |
Título(s) alternativo(s): | Journal of Agricultural and Food Chemistry |
Autor(es): | Santos, Lisia Maria Gobbo dos Welz, Bernhard Araujo, Rennan Geovanny Oliveira Jacob, Silvana do C. Vale, Maria Goreti R. Martens, Andreas Martens, Irland B. Gonzaga Ross, Helmut Becker |
Autor(es): | Santos, Lisia Maria Gobbo dos Welz, Bernhard Araujo, Rennan Geovanny Oliveira Jacob, Silvana do C. Vale, Maria Goreti R. Martens, Andreas Martens, Irland B. Gonzaga Ross, Helmut Becker |
Abstract: | A fast routine screening method for the simultaneous determination of cadmium and iron in bean and soil samples is proposed, using high-resolution continuum source graphite furnace atomic absorption spectrometry and direct solid sampling. The primary absorption line at 228.802 nm has been used for the determination of cadmium, and an adjacent secondary line, at 228.726 nm, for iron. Fourteen bean samples and 10 soil samples from nine states all over Brazil have been analyzed. The limits of detection (3 σ, n = 10) were 2.0 μg kg-1 for Cd and 4.5 mg kg-1 for Fe. The relative standard deviation ranged from 4 to 7% for Cd and from 5 to 28% for Fe, which is usually acceptable for a screening method. The accuracy of the method has been confirmed by the analysis of two certified reference materials; the results were in agreement with the certified values at a 95% confidence interval. |
Palavras-chave: | Bean and soil samples simultaneous determination of Cd and Fe high-resolution continuum source AAS graphite furnace atomization direct solid sample analysis |
Editora / Evento / Instituição: | Elsevier |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/6183 |
Data do documento: | 2009 |
Aparece nas coleções: | Artigo Publicado em Periódico (Química) |
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(79)jf9024773.pdf Restricted Access | 756,96 kB | Adobe PDF | Visualizar/Abrir Solicitar uma cópia |
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