Chelatometric titration of lead and bismuth by potentiometric method

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

Abstract

Each metel ions in mixtures of lead or bismuth and other heavy metals were examined as to be titrated together or separately by potentiometric method in many kinds of buffer solution by using the recording titration apparatus (RAT-IS) which describes the titration curve automatically for the indicationof the end point. The suitable kinds ofbuffers were disclosed for EDTA titration of lead or bismuth in mixtures with other heavy metals.