The radiation chemistry of aqueous solutions of sodium 9,10-anthraquinone-2-sulfonate

Abstract

Can. J. Chem. 54, 505 (1976).The 60Co y-radiolysis of aqueous solutions of sodiunl 9,lO-anthraquinone-2-sulfonate has been studied in acidic, unbuffered, and alkaline conditions and with addition of N20 and 2-propanol. Mechanisms are proposed to account for the yields of Hz01 and hydroxylated anthraquinone sulfonates. In neutral solution, in the absence of 02, the OH' and e-adducts undergo preferential cross termination. Reduction of the OH' adduct leads to dehydration and regeneration of the quinone.CHARLES EUGENE BURCHILL, DOUGLAS MICHAEL SMITH et JAMES LESLIE CHARLTON. Can. J. Chenl. 54 505 (1976).On a etudii la radiolyse-r par du 6OCo de solutions aqueuses d'anthraquinone-9,10 sulfonate-2 de sodium; ces etudes ont ete effectuees en milieu acide, basique et non-tampon116 et avec addition de N2O et de propanol-2. On propose des mecanismes pour tenir compte des rendements en Hz02 et en sulfonates d'anthraquinones hydroxylis. En milieu neutre, en ('absence de 02, les adduits de OH' et e-subissent de prefkrence une terminaison croisee. La reduction de I'adduit OH-conduit B une dCshydratation et k la rCgeneration de la quinone.[Traduit par le journal]

Photochemistry of 5-methylphenazinium salts in aqueous solution. 2. Optical flash photolysis and fluorescence results and a proposed mechanism

“…Recently, Clark and Stonehill32 presented evidence to indicate that free •OH radicals are not involved in the reaction. This view is supported by the work of Burchill et al 33 and Charlton et al 34 We have found that irradiation of sodium 9,10anthraquinone-2-sulfonate aqueous solutions containing the spin trap DMPO produces the same OH spin adduct as is found in the MP+ system. It may be that a similar intermediate is involved.…”