Pulse photolysis of arsenazo 3 complex with uranyl ions in aqueous solutions

Processes, taking place in arsenazo 3 complex compound with uranyl ions in acid aqueous solutions (pH 0.5-3.0) were investigated by the methods of microsecond and nanosecond pulse photoexcitatior. The formation of two intermediate products was established: short-lived (tau=1.2x10-6 s) and long-lived (tau=0.15-1.2 s). Differential absorption spectra of intermediate products and the kinetics of their destruction were measured. Possible scheme of processes, proceeding during complex compound photoexcitation, was suggested