Paper Ionophoretic Technique in the Study of Mixed Complexes

Abstract

Brij Bhushan TewariDepartment of Chemistry, Faculty of Natural Sciences, University of Guyana,P.O. Box 101110, Georgetown, Guyana (S. America)Received October 5, 2001Stability constants of complexes of aluminium(III) and thorium(IV) with methionine and cysteine have beendetermined by modified paper electrophoretic technique at µ= 0.1 M. The proportion of ionic species ofmethionine and cysteine were varied by changing pH of background electrolyte. The stability constants of thecomplexes metal-methionine-cysteine have been found to be 4.31 ± 0.12 and 5.40 ± 0.19 (log K values) forAl³