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Updated: Jun 28, 2026

Dynamic Electrochemical Measurement of Chloride Ions
Published on: February 5, 2016
TRIEN and TETREN as titrants in potentiometry with a silver indicator electrode
A Hulanicki1, M Trojanowicz, J Domanska
1Institute of Fundamental Problems in Chemistry, University of Warsaw, Warsaw, Poland.
Abstract:
The possibility of application of triethylenetetramine (TRIEN) and tetraethylenepentamine (TETREN) in metal titrations with the silver electrode as indicator was investigated. Copper, cadmium and zinc were determined in the presence of calcium, magnesium, aluminium and iron(III) in the concentration range from 0.02 to 2mM. The errors did not exceed 1%. On a similar basis copper and iron may be successfully determined in their mixtures under carefully controlled conditions. Copper is titrated with TRIEN, and both metals with EDTA at pH 7.5-8.0 in sulphosalicylate medium. The results obtained were in good agreement with those theoretically predicted.
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