Study of the coordinated system Pb(II)-alanine-alaninate ion

Abstract

The polarographic method has been applied to the study of the mixed-coordinated system Pb(II)-alanine-alaninate ion in aqueous medium, I = 1.0 mol l-1 (NaClO4) and 25 ± 0.1°C. The formation of the complexes [PbA]2+ (β10 = 13.2), [PbA2]2+ (β20 = 25), [PbA(A-)]+ (β11 = 1.01 . 105), [Pb(A-)]+ (β01 = 3.76 . 104) and [Pb(A-)2] (β02 = 6.74 . 107) was observed.