Investigation into peculiarities of the mercury-graphite electrode and discharge-ionization of mercury on graphite. Communication 4. Effect of mercury quantity deposited on the graphite electrode on metal oxidation currents

Investigations of ionization process of mercury and cadmium electrodeposited simultaneously on the graphite electrode showed, that a boundary ration founded for some metals from Isub(maxMe)-Csub(Hg (II)) dependence (as indicated in literature) can not be objective parameter for characteristics of metal-mercury graphite electrode system. Boundary ratio calculated by the use of Isub(maxMe)-Qsub(Hg) or Qsub(Me)-Qsub(Hg) dependences remains constant and is independent on electrolyse conditions. After boundary ratio has been reached, analytical signal of determined element is independent on quantity of mercury on the electrode surface and metal concentration in mercury phase