Rate Constants of the Reaction of the Hydrated Electron and Hydroxyl Radical with Ozone in Aqueous Solution

Article abstract of DOI:10.1021/j100391a024

Absolute rate constants for the reaction of the hydrated electron and hydroxyl radical with ozone in aqueous solution have been determined by using pulse radiolysis techniques.The rate constant, k(e_aq^-+O3)=(3.60+/-0.14)*10¹⁰ dm³ mol^-1 s^-1, was measured in the pH range 4.1-6.05 by following the decay of e_aq^- at 600 nm.The rate constant k(OH.+O3)=(3.02+/-0.25)*10⁹ dm³ mol^-1 s^-1, was obtained by a competition method at pH 6.7 with acetate ions as the OH. radical scavangers.The ozone concentration for both studies varied from 0.05*10^-3 to 0.50*10^-3 mol dm^-3.