REDOX REACTIONS OF V(Ⅲ) AND Cr(Ⅲ)PICOLINATE COMPLEXES IN AQUEOUS SOLUTIONS

摘要

Reactions of e_(aq)~-, H-atoms, OH, (CH_3)_2COH, and CO_2~(-·) radicals with V(Ⅲ)picolinate and Cr(Ⅲ)picolinate have been studied by the pulse radiolysis technique. The spectra of V(Ⅱ)picolinate, V(Ⅳ)picolinate, Cr(Ⅱ)picolinate, OH adduct of Cr(Ⅲ)picolinate and Cr(Ⅳ)picolinate have been obtained and the rate constants of the reactions of various radicals with V(Ⅲ) and Cr(Ⅲ)picolinate have been determined. The implications of these results to the chemical decontamination of nuclear reactor systems are discussed.