The photochemical catalysis data in the peracid ( hcooh ) system suggests that the reaction sulfur compounds are converted to their corresponding aqueous - soluble sulfoxide and sulfone follows the characteristic pseudo - first - order reaction kinetics 光甲酸(双氧水)催化汽油体系中硫化物转化为水溶性砜和亚砜的反应符合一级反应动力学特徵。