Influence of ammonium ions on electroreduction of anions at a mercury electrode

Influence of the ammonium ions on the electroreduction of number of anions, including IO3-, at the mercury drop electrode is studied through the polarography method. It is established, that in the case of IO3- reduction in the nonbuffer solutions the addition of ammonium ions causes the acceleration of the process, which, however, is not manifested in the buffer media. The conclusion is made, that the observed effect in the nonbuffer media is related to the change in the pH value of the near-the-electrode layer in the course of the electrolytic reactions but not to the simultaneous transfer of the ammonium ions and electrons in the elementary action of the IO3- anions reduction