Radiation chemistry of aqueous solutions of sodium o-iodhippurate

Abstract

This paper is an auto-review of experimental results obtained by the authros during the study of radiation chemistry of aqueous solutions of sodium o-iodhippurate. The products of α-radiolysis have been identified. Among them are iodide ion, o-hydroxyhippurate, hippurate, hydrogen peroxide, methylamide of o-iodbenzoic acid etc. Their radiation chemical yields and also the yield of the decomposition of o-iodhippurate under different conditions have been measured. The intermediate products of radiolytic transformations of o-iodhippurate have been detected by pulse-radiolysis method with optical registration of short-lived species. They are OH and H adducts to benzene ring, product of abstraction of iodine by e - aq and H, radical of phenoxyl type in acid medium and peroxide hydroxycylohexadienyl radical in the presence of oxygen. The rate constants of some reactions with their participation have been determined. On the basis of data obtained, the conclusions on the mechanism of radiolytic transformation of o-iodhippurate in aqueous solutions have been made.