摘要
[目的]研究过二硫酸钾氧化降解DDT反应的影响因素。[方法]考查pH值、氧化剂浓度、超声和紫外光对过二硫酸钾氧化降解DDT反应的影响,并应用于淡水和海水中。[结果]结果表明,随pH值的降低、过二硫酸钾浓度的升高,氧化降解DDT的效果越好。超声和紫外光的协同作用对反应的促进作用更大。应用于淡水和海水中氧化降解DDT,1.0 h DDT的降解率达90%,2.5 h DDT的降解率达99%。[结论]用过二硫酸钾氧化降解环境水中的DDT是一个适用范围较、效率高的简捷方法。
[Objective] The purpose was to study the influencing factors of oxidizing and degrading DDT with potassium peroxydisulfate.[Method] The effect of pH value,the concentration of oxidants,ultrasound and ultraviolet on oxidizing and degrading DDT was studied in detail.The method could be applied to oxidize DDT in freshwater and seawater.[Result]The results showed that the effect of oxidizing and degrading DDT was better along with the reduction of pH value and increase of potassium peroxydisulfate concentration,the synergism of the ultrasonic and ultraviolet light had bigger promoting action on oxidizing and degrading DDT.The degradation efficiency of DDT in freshwater and seawater were 90% after 1.0 h and 99% after 2.5 h,respectively.[Conclusion] Oxidizing and degrading DDT of environment water with potassium peroxydisulfate is a more efficient,easy and simple method.
出处
《安徽农业科学》
CAS
北大核心
2008年第27期11983-11984,共2页
Journal of Anhui Agricultural Sciences
基金
四川省教育厅资助项目
关键词
DDT
过二硫酸钾
超声
UVc
降解
POPS
DDT
Potassium peroxydisulfate
Ultrasonic
Ultraviolet
Degradation
POPs
