Abstract

Abstract The mixed ligand complex formation of o-mercaptobenzoic acid and citric acid with Cd(II), Pb(II), and Tl(I) in aqueous KNO3 (μ=1.0 mol dm−3) solutions containing Triton X-100 (0.001%) has been investigated by polarography. It was shown that only one mixed ligand entity MAiXj is formed, where i is two for Cd (II) and one for Tl(I) j is one for all complexes and A and X are the o-mercaptobenzoate and citrate ligands respectively. The stability constants have been evaluated.

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