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Analytical Letters Volume 34, 2001 - Issue 3
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Original Articles

ELIMINATION OF DISTURBING EFFECT CAUSED BY SULPHUR DIOXIDE FOR SULPHUR DETERMINATION IN WINES BY ICP-OES

I. Sarudi Department of Chemistry, Faculty of Animal Sciences, Kaposvár University, Kaposvár, H-7400, Hungary
,
E. Varga-Cseresnyés Department of Chemistry, Faculty of Animal Sciences, Kaposvár University, Kaposvár, H-7400, Hungary
,
Zs. Csapó-Kiss Department of Chemistry, Faculty of Animal Sciences, Kaposvár University, Kaposvár, H-7400, Hungary
&
A. Szabó Department of Chemistry, Faculty of Animal Sciences, Kaposvár University, Kaposvár, H-7400, Hungary
Pages 449-455 | Received 03 Jul 2000, Accepted 03 Nov 2000, Published online: 02 Feb 2007
 
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Abstract

For wine samples and other acidic sulphite solutions it was found that sulphur determination by means of ICP-OES technique had a positive error. The elimination of the problem succeded by converting the physically dissolved SO2 with an alkali to ionic S(IV) forms, oxidizing S(IV) with iodine to S(VI) or binding free SO2 with formaldehyde. The methods developed are suitable for serial tests and their accuracy meets the practical requirements.

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