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Determination of metal traces in wine by argon stabilized d.c. arc |
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| Authors: | S. Ražić Marija Todorović Ivanka Holclajtner-Antunović Milovan Stoiljković |
| Affiliation: | Faculty of Pharmacy, Institute of Analytical Chemistry, P.O. Box 146, University of Belgrade, Vojvode Stepe 450, YU-11000 Belgrade, Yugoslavia e-mail: snsn@sezampro.yu, YU Faculty of Chemistry, Institute of Analytical Chemistry, P.O. Box 158, University of Belgrade, YU-11000 Belgrade, Yugoslavia, YU Faculty of Physical Chemistry, P.O. Box 137, University of Belgrade, YU-11000 Belgrade, Yugoslavia, YU Institute of Nuclear Sciences, “Vin?a”, P.O. Box 522, Vin?a, Yugoslavia, YU |
| Abstract: | A spetroscopic method for the determination of metal traces (Mn, Cu, Fe) in wine has been developed based on argon stabilized d.c. arc plasma at atmospheric pressure. The experimental conditions were optimized using lateral distributions of spectral line intensities of the trace elements in aqueous and ethanol-aqueous solutions. The method was applied to the analysis of 6 wines from 3 Serbian wine-growing regions. Direct and standard addition methods were tested. The precision of the method is characterized by a relative standard deviation of 0.50– 3.00%. The accuracy of the method was assessed by flame AAS. |
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