Selective Analysis of Chlorine (Hypochlorous Acid) and Chlorine Dioxide Using Chemiluminescence

Using chemiluminescence produced by reactions with luminol and hydrogen peroxide a method for simultaneous and selective analysis of chlorine (hypochlorous acid) and chlorine dioxide has been developed. A continuous flow technique is used and the light emitted at two sites along the liquid flow is recorded. Selectivity is based on the difference in the rates at which the chemiluminescence, produced by the reaction involving chlorine and that involve chlorine dioxide, fades.