Alcohol Electrodes in Beverage Measurements

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Abstract
An alcohol electrode which had been optimized1 to give an extended linear response to alcohol, eliminate the classical electrochemical interferences of hydrogen peroxide-based electrodes and be pH independent, was used to measure the alcohol concentration in beverage samples both in batch and FIA (wall jet) mode. The results obtained were compared to a spectrophotometric measurement used with a Sigma kit. It was found that the batch measurements were more accurate than the kit and FIA, although very good precision could be obtained with FIA. The method is rapid, easy to perform and requires no sample preparation.