%X In this paper we show that bromide scavenges the �OH radicals formed upon photolysis of nitrate, before they leave the solvent cage. Bromide can thus inhibit the in-cage recombination between �OH and �NO2. The consequence is an increased generation of �NO2 and nitrite and of Br2 -� + �OH, compared to �OH alone in the absence of bromide. We show that this effect compensates for the lower reactivity of Br2 -� compared to �OH toward certain organic substrates, e.g. phenol and tryptophan. Our findings could lead to a deep revision of the present views of the role of bromide in saltwater photochemistry. © 2008 Springer-Verlag.
%J Environmental Chemistry Letters
%L scholars636
%O cited By 21
%R 10.1007/s10311-008-0176-8
%N 4
%D 2009
%A R. Das
%A B.K. Dutta
%A V. Maurino
%A D. Vione
%A C. Minero
%V 7
%T Suppression of inhibition of substrate photodegradation by scavengers of hydroxyl radicals: The solvent-cage effect of bromide on nitrate photolysis
%P 337-342