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Title of article :
Detection of the origin of Brazilian wines based on the determination of only four elements using high-resolution continuum source flame AAS
Author/Authors :
Boschetti، نويسنده , , Wiliam and Rampazzo، نويسنده , , Roger T. and Dessuy، نويسنده , , Morgana B. and Vale، نويسنده , , Maria Goreti R. and de Oliveira Rios، نويسنده , , Alessandro and Hertz، نويسنده , , Plinho and Manfroi، نويسنده , , Vitor and Celso، نويسنده , , Paulo G. and Ferrمo، نويسنده , , Marco F.، نويسنده ,
Issue Information :
ماهنامه با شماره پیاپی سال 2013
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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 , Multi-element determination , hierarchical cluster analysis , Principal component analysis , Origin of wine
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