Stopped-flow thin-layer coulometric method for the determination of disinfectants in water

Abstract

A coulometric technique, using a thin layer electrochemical cell and stopped-flow sampling to minimize interference from non-faradaic contributions to the signal, has been developed and applied to the analysis of oxidants employed in water treatment. It is shown that the coulombic efficiency of the method is very close to 100%, resulting in a linear relationship between charge and analyte concentration.