Abstract
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: <i>(1)</i> high performance liquid chromatography (HPLC); <i>(2)</i> aeration-oxidation; and <i>(3)</i> 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.
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