H_2O_2、K_2S_2O_8光降解有机磷DDVP的研究

Study on the Photodegradation of Organophosphrus DDVP

以H2 O2 、K2 S2 O8为氧化剂 ,9W汞灯为光源对有机磷DDVP水溶液进行光降解 .结果表明 :H2 O2 、K2 S2 O8对DDVP的光降解具有良好的效果 .探讨了氧化剂浓度、pH值、Cu2 +浓度对DDVP光降解的影响 .提出了在H2 O2 、K2 S2

Photodegradation of dichlorvos(DDVP)was investigated by irradiating with a 9W mercury lamp and using H 2O 2、K 2S 2O 8 as oxidents.The results show that H 2O 2 and K 2S 2O 8 can photodegradate DDVP betterly. Influences of pH,concentrations of oxidents and Cu 2+ on the photodegradation rate of DDVP were investigated. The producing mechanisms and the action mechanisms of ·OH and which are the active species of oxidation-degradation of DDVP in the processes of pho todegradation of DDVP by H 2O 2 and K 2S 2O 8 were proposed.