Effect of pH upon electroreduction of cadmium(II) ions in aqueous solutions containing polyethylenimine

The effect of the pH of the solution upon electroreduction of cadmium(II) complexes with polyethylenimine has been studied by methods of differential impulse and tast polarography and square-wave and cyclic voltammetry in the region of pH from 4 to 12. A scheme is proposed for the electrode process involving the Cd(II) complexes with polyethylenimine in the studied pH range.