Chelatometric titration of chromium, manganese or iron by potentiometric method

Studies on EDTA titration of mixed metal ions by recording titration apparatus. IV

Abstract

Each metal ions in mixtures of chromium, manganese or iron and other heavy metals were examined as to be titrated together or separately by potentiometric method in many kinds of buffer solutions by using the recording titration apparatus (RAT-IS) which describes the titration curve automatically for the indication of the end point. The suitable kinds of buffers were disclosed for EDTA titration of Cr³⁺, Mn²⁺ or Fe³⁺ in mixtures with other heavy metal ions.