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Accuracy in the precise coulometric titration of ammonia and ammonium ion with electrogenerated hypobromite

Authors
Journal
Talanta
0039-9140
Publisher
Elsevier
Publication Date
Volume
38
Issue
4
Identifiers
DOI: 10.1016/0039-9140(91)80077-d

Abstract

Abstract A precise and accurate method in which ammonia and ammonium ions are coulometrically titrated with electrogenerated hypobromite was studied. Through the measurement of the current efficiency for generating hypobromite and the dependencies of titration results on electrolysis current and delay time between sampling and starting electrolysis, precision and accuracy of 0.01 and 0.02%, respectively, were obtained. The accuracy of the titration was compared with that of acidimetric coulometric titration of ammonia.

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