https://doi.org/10.1351/goldbook.09159
Electrochemical measurement principle in which the electric charge required to carry out a known electrochemical reaction is measured. By Faraday’s laws of electrolysis, the amount of substance is proportional to the charge.
Notes:
- Coulometry used to measure the amount of substance is a primary reference measurement procedure not requiring calibration with a standard for a quantity of the same kind (i.e. amount of substance).
- The coulometric experiment can be carried out at controlled (constant) potential (see direct coulometry at controlled potential) or controlled (constant) current (see direct coulometry at controlled current).