Electron Beam Pulse Radiolysis of Hydroxysemicarbazide

The kinetics of reactions between hydroxysemicarbazide(HSC) with water-radioactive particles (e^-_aq, ·OH and ·H) as well as singleelectron oxidant ·CO^-₃ during pulse radiolysis were studied. The reactions are approximately quasi-first-order reactions, and the reaction rate constants are k（e-aq）=1.41×10⁸ L/(mol·s),    k（·OH）=1.05×1010 L/(mol·s), k（·H）=2.68×10⁵ L/(mol·s), k（·CO^-₃）=4.25×10⁸ L/(mol·s), respectively. Among them, the reaction rate constant of HSC and ·OH is the largest, so the reaction of HSC and ·OH is the main reaction during the pulse radiolysis process.