OBSERVATION OF CLO3 RADICAL IN AQUEOUS CHLORATE SOLUTION BY PULSE-RADIOLYSIS

A pulse radiolysis study on concentrated aqueous chlorate solution was carried out. In the radiolysis of the chlorate system, ClO2 and ClO3 radicals are produced as a result of direct action of radiation on chl orate ion with G values of 1.0 and 1.5, respectively, whereas the slow formation process of ClO3 radicals is not observed. The absorption pe ak Of ClO3 radicals is around 330 +/- 10 nm and the absorption coeffic ient is evaluated as 4700 M-1 cm-1. The rate constants of some reactio ns of ClO3 radical with additives were determined.