摘要
研究了氯氰菊酯在苯乙酮作用下的光解动力学规律以及探针性物质２，６－二叔丁基－４－甲基苯酚，１，２，３，４－四氢萘对苯乙酮敏化作用的影响．结果表明，随着苯乙酮浓度的升高，氯氰菊酯的光解速率常数略呈上升趋势，而且氯氰菊酯的光解速率与自身浓度变化无关；溶剂分子的偶极矩越大，与溶液中自由基的作用越强，氯氰菊酯光解速率就越小；在苯乙酮敏化体系中，与ＲＯＯ·相比，ＲＯ·的浓度很低，ＲＯＯ·的稳态浓度约为１０－８ｍｏｌ·Ｌ－１。
The kinetic characteristic of photolysis of cypermethrin (CPM) sensitized by acetophenone(AP) and the effect of probe substance 2,6 Di tert butyl 4 methylphenol and tetralin is studied in this report.It showed that the photolysis rate of CPM increases slightly with the increase of AP concentration;photolysis rate of CPM has no relation with itself;The more dipolar moment the solvent has,the more the interaction between radical and solvent has,and the slower the photolysis of CPM is.The addition of radical probe substance confirms that ROO · is more than RO ·.The steady state concentration of ROO · is about 10 -8 mol·L -1 .
出处
《武汉大学学报（自然科学版）》
CSCD
1997年第2期185-190,共6页
Journal of Wuhan University(Natural Science Edition)
关键词
敏化作用
拟除虫菊酯
自由基
光降解
光氧化
photolysis
sensitization
pyrethroid
acetophenol
radical
kinetic
