FULLY AUTOMATED POTENTIOMETRIC DETERMINATION OF THE FREE LIGAND CONCENTRATION IN COMPLEXATION TITRATIONS - THE SYSTEM AG(I) WITH N-METHYLETHYLENEDIAMINE

Abstract

A fully automated potentiometric procedure is presented for the determination of free ligand concentrations of ternary systems in aqueous solutions. A primary model selection and an estimation of the stability constants of the ternary system can be obtained from the same data. The automated technique is demonstrated on the complexation of Ag(I) with N-methylethylenediamine in 1 M NO3- medium and the results are compared with the standard ratio procedure.