Selective, simple and economical method for the voltammetric determination of Bi(III) in the presence Cystine in Non - Complexing Solution

Abstract

The simple and fast method for the determination of Bi(III) in non-complexing solution was proposed. The catalytic activity of cystine on Bi(III) ions electroreduction process were utilized. The calibration graph of Bi(III) in 4 mol·dm-3 chlorate (VII) in the presence of 1·10-2 mol·dm-3 cystine is linear in the range of concentrations of Bi(III) from 7·10-7 to 4·10-5 mol·dm-3. The detection and quantification limits were found to be 1.2·10-7 mol·dm-3 and 4.02·10-7 mol·dm-3, respectively. Precision and recovery of the method were investigated by determination of Bi(III).