ALCOHOL ELECTRODES IN BEVERAGE MEASUREMENTS

An alcohol electrode which had been optimized(1) to give an extended l inear response to alcohol, eliminate the classical electrochemical int erferences of hydrogen peroxide-based electrodes and be pH independent , was used to measure the alcohol concentration in beverage samples bo th in batch and FIA (wall jet) mode. The results obtained were compare d to a spectrophotometric measurement used with a Sigma kit. It was fo und that the batch measurements were more accurate than the kit and FI A, although very good precision could be obtained with FIA. The method is rapid, easy to perform and requires no sample preparation.