COULOMETRIC TITRATION OF BARIUM BY ETHYLENEDIAMINETETRAACETIC ACID WITH AMPEROMETRIC DETECTION

A method has been developed for determining 20-30 mg of barium in the presence of copper and yttrium by coulometric titration by ethylenedia minetetraacetic acid with 1 amperometric detection. A TMP-4 carbon clo th and a carbon fiber of the same quality served as generating and ind icator electrodes, respectively. The titration was carried out at cons tant potentials of both generating and indicator electrodes. The error was not higher than 0.5%, RSD = 0.5%.