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研究毒死蜱的表面光化学降解以及9种农药和6种表面活性剂对毒死蜱光解的敏化或猝灭作用。结果指出:毒死蜱在玻片表面的光解半衰期为42.62h,抗蚜威、丙烯菊酯对毒死蜱的光解有显著的加速光解作用,光敏效率分别为51.80%和34.38%;林丹、氟氯菊酯、杀螟松对毒死蜱有显著的延缓光解作用,猝灭效率分别为53.76%、25.16%、10.19%。6种表面活性剂中,2201、0201、JFC对毒死蜱的光解有显著的加速光解作用,光敏效率分别为42.07%、31.11%和19.58%;其他几种农药与表面活性剂对毒死蜱的光解没有显著影响。
The photochemical degradation of chlorpyrifos and the sensitization or quenching of chlorpyrifos by 9 pesticides and 6 surfactants were studied. The results showed that the photolysis half-life of chlorpyrifos on the glass slide surface was 42.62h. The anti-pirimicarb and allethrin accelerated the photolysis of chlorpyrifos significantly, the photosensitization efficiencies were 51.80% and 34.38%, respectively. Lindane, Pyrethrolene and fenitrothion significantly delayed the photolysis of chlorpyrifos. The quenching efficiencies were 53.76%, 25.16% and 10.19%, respectively. Of the six surfactants, JFC had a significant photolysis effect on the photodegradation of chlorpyrifos, with phototoxicity efficiencies of 42.07%, 31.11% and 19.58%, respectively; while the effects of other pesticides and surfactants on chlorpyrifos Solution did not have a significant effect.