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Analytical Letters Volume 27, 1994 - Issue 15
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Original Articles

Alcohol Electrodes in Beverage Measurements

Maria J. F. Rebelo Department of Chemistry, University of Lisbon, R. Ernesto de Vasconcelos, Campo Grande, Bloco C1 5 Piso, Lisboa, 1700, PORTUGAL
,
Dario Compagnone Dipartimento di Scienze e Tecnologie Chimiche, Universita di Roma “Tor Vergata”, Via della Ricerca Scientifica, 00173, Roma, ITALY
,
George G. Guilbault Department of Chemistry, University of New Orleans, New Orleans, LA, 70148
&
Glennn J. Lubranod Universal Sensors Inc., 5258 Veterans Blvd, Suite D, Metairie, LA, 70006
Pages 3027-3037 | Received 15 Jun 1994, Accepted 31 Jul 1994, Published online: 22 Aug 2006
 
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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.

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