Use of a sulphur dioxide gas sensing membrane probe in wines and juices at their natural pH
Abstract
A sulphur dioxide gas sensing membrane probe has been used to determine the concentration of “free” sulphur dioxide in aqueous solutions of pH 3–4 in the concentration range 10–2–10–4 mol l–1. The accuracy and reproducibility suggested that this was a new non-destructive method suitable for the analysis of sulphur dioxide in juices and beverages.