Electrochemical study of iodide in the presence of barbituric acid. Application to coulometric titration of barbituric acid

摘要

Electrochemical oxidation of iodide in the presence of barbituric acid has been studied using cyclic voltammetry and controlled-potential coulometry. The results indicate that the resulting iodine takes part in halogenation reaction and reacts with barbituric acid. According to obtained results, a new coulometric titration method with potentiometric end-point detection for the determination of barbituric acid is presented. In the presented method, 1-200 mu mol of barbituric acid was successfully determined. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 22]