Selective, Simple and Economical Method for the Voltammetric Determination of Bi(III) in the presence Cystine in Non – Complexing Solution
1 Department of Analytical Chemistry and Instrumental Analysis, Faculty of Chemistry, M. Curie–Skłodowska University, M. Curie–Skłodowska Sq. 3, 20-031 Lublin, Poland
2 Department of Instrumental Analysis, University of Łódź, Pomorska Sq. 163, 90-236 Łódź, Poland
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).
Key words: Bi (III) determination / cystine / square wave voltammetry
© Owned by the authors, published by EDP Sciences, 2013
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.