Abstract

Abstract The physical-chemical properties of some selenium-containing inorganic radicals have been studied by using the pulse radiolysis technique. These inorganic free radicals can be formed readily in irradiated aqueous solutions by scavenging of OH primary radicals with anions such as selenocyanate and the anionic forms of selenium dioxide (HSeO− 3/SeO2- 3). Particular attention has been paid to the spectral and kinetic properties of the radical species involved. The investigations on the reactivity of these radicals with amino acids and enzymes have allowed information both on oxidation mechanism and on the preferential site of attack.

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