Kinetic Currents:

Some substances are not electroactive but made electroactive on chemical reactions. a product so created through chemical reactions undergoes reduction or oxidation at DME. The height of the polarographic wave or current is determined by the rate of the chemical reaction that produces an electroactive substance in thin layer of the solution around the mercury drop. A wave of this type are referred as kinetic waves and the mechanism responsible for them may be written as

  'Y' is not electroactive but 'O' is

 O + ne^- = R

where K_f and K_b are first sequence rate constants (in sec ^-1) for the forward and backward reactions.