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Am. J. Enol. Vitic. 43:3:227-229 (1992)
Copyright © 1992 by the American Society for Enology and Viticulture.
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A Comparison of Three Methods for Determining Total Sulfur Dioxide in White Wine

D. J. Williams 1, P. D. Scudamore-Smith 1, S. M. Nottingham 1, and M. Petroff 1

1 Queensland Department of Primary Industries, Hamilton, Queensland, Australia 4007.

Three methods were tested for their suitability as alternatives to the standard Monier-Williams (M-W) distillation for the determination of sulfur dioxide in white wines. The alternatives tested were: (1) high performance liquid chromatography (HPLC); (2) aeration-oxidation; and (3) rapid distillation followed by redox titration. Standard sulfite solutions and wine samples were analyzed by all four techniques. Results from HPLC and M-W methods were in close agreement. When analyzing by aeration-oxidation, a correction factor had to be introduced to obtain comparable results with the M-W distillation. The rapid distillation was not a suitable replacement for the M-W procedure.

Key words: total sulfur dioxide analysis, white wine

Submitted on February 20, 1991






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Copyright © 1992 by the American Society for Enology and Viticulture.