ABSTRACT
Coulometry is the general term designating an electroanalytical method which consists in the measurement of the quantity of electricity used either to transform the substance to be determined in a redox reaction or to produce a reactant of an analytical reaction. Coulometry is advantageous in micro or ultramicro analysis as very small amounts of electricity can be measured with precision. A basic requirement in coulometric analysis consists in selecting an electrode reaction which takes place with 100% current efficiency as the amount of electricity is employed to calculate the quantity of the substance to be determined. Coulometry also permits the production of various reagents which, because of their instability, cannot be prepared by conventional means.
