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metadata.dc.type: | Artigo de Periódico |
Title: | Detection of the origin of Brazilian wines based on the determination of only four elements using high-resolution continuum source flame AAS |
Other Titles: | Talanta |
Authors: | Boschetti, Wiliam Rampazzo, Roger T. Dessuy, Morgana B. Vale, Maria Goreti R. Rios, Alessandro de Oliveira Hertz, Plinho Manfro, Vitor Celso, Paulo G. Ferrão, Marco F. |
metadata.dc.creator: | Boschetti, Wiliam Rampazzo, Roger T. Dessuy, Morgana B. Vale, Maria Goreti R. Rios, Alessandro de Oliveira Hertz, Plinho Manfro, Vitor Celso, Paulo G. Ferrão, Marco F. |
Abstract: | A method has been developed to determine 10 elements in Brazilian red wines using high-resolution continuum source flame atomic absorption spectrometry, a technique that allows the fast sequential determination of an essentially unlimited number of elements per sample, each one under previously optimized conditions. All measurements were made without sample preparation, using aqueous standard solutions for calibration. The results were in agreement within 99% of confidence (t-test) with those obtained by inductively coupled plasma optical emission spectrometry. The same grape, Cabernet sauvignon, was used in all experiments, and the wines from each region were prepared especially for this investigation in order to avoid any confusion due to grapes from other regions, which are often used in commercial wines. The elements K, Mn, Rb and Sr were found to be the best indicators for the origin of the wines, based on a Principal Component Analysis. |
Keywords: | Metals in wine High-resolution continuum source flame AAS Origin of wine Multi-element determination Principal Component Analysis Hierarchical Cluster Analysis |
Publisher: | Talanta |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/13275 |
Issue Date: | 2013 |
Appears in Collections: | Artigo Publicado em Periódico (Química) |
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