臭氧水降解土壤农药残留研究

Study on Soil Pesticide Residues Degraded by Ozone Water

[目的]研究臭氧水降解土壤农药残留的效果。[方法]利用不同浓度臭氧水分别浇灌喷有毒死蜱、乐果、多菌灵、氯氟氰菊酯4种农药的蔬菜瓜果类种植土壤和果树类种植土壤,比较臭氧水对不同农药的降解效果以及对不同土壤中农药的降解效果。[结果]无论是在蔬菜瓜果类种植土壤中还是在果树类种植土壤中,随着臭氧水浓度的提高,土壤中的农药降解率也提高,在各个浓度下毒死蜱的降解率均最高且同一农药在不同土壤中的降解率差异不大。[结论]臭氧水能降解土壤中的农药残留,为臭氧水处理去除土壤农药残留提供了理论及技术支撑。

[Objective]To study the effect of ozone water on the degradation of pesticide residues in soil.[Method]Different concentrations of ozone water were used to water the soil of vegetables and fruits,and fruit trees sprayed with four pesticides(chlorpyrifos,dimethoate,carbendazim and cyhalothrin),and the degradation effect of ozonated water on different pesticides and the degradation effect of pesticides in different soils were compared.[Result]With the increase of ozone water concentration,the degradation rate of pesticides in the soil also increased,and the degradation rate of chlorpyrifos was the highest at each concentration,and the degradation rate of the same pesticide in different soils was indistinguishable.[Conclusion]The ozone water can degrade pesticide residues in soil,which provides theoretical and technical support for ozone water treatment to remove soil pesticide residues.