Controlled-potential coulometry for the analysis of carboxylic acids

Abstract

Coulometric titration methods with potentiometric indication of the end-point have been developed for determining benzoic, salicylic, nicotinic, and ascorbic acids in various pharmaceutical dosage forms, liniments, and aqueous alcohol solutions. The relative standard deviation was within 0.01-0.02. © 2009 Springer Science+Business Media, Inc.