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采用 9W汞灯为光源，以 K2S2O8为氧化剂，对对硫磷进行光降解，为了揭示在 K2S2O8光降解对硫磷过程中的 Cu2＋的催化作用，在 Cu2＋存在和不存在的情况下，比较了 Na2SO4的浓度对 K2S2O8光降解对硫磷的影响。根据实验结果，提出了在光照射下，由 S2O82－在 Cu2＋的催化下产生· OH自由基的机理和· SO4－自由基对对硫磷的氧化降解机理。
9S mercury lamp was used as light source and parathion was photodegraded with K2S2O8 as oxidant. In order to reveal the catalytic effect of Cu2 + in photodegradation of parathion in K2S2O8, Na2SO4 was compared in the presence and absence of Cu2 + Effect of Concentration on Photodegradation of Parathion in K2S2O8. According to the experimental results, the mechanism of · OH radical generated by S2O82- under the catalysis of Cu2 + and the oxidative degradation of parathion by · SO4- radical were proposed under light irradiation.