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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,这个浓度也比单线态氧的稳态浓度高得多
The kinetics of photolysis of cypermethrin under the action of acetophenone and the effects of 2,6-di-tert-butyl-4-methylphenol, 1,2,3,4-tetrahydronaphthalene on acetophenone Effect of sensitization. The results showed that with the increase of the concentration of acetophenone, the photodegradation rate constant of cypermethrin increased slightly, and the photodegradation rate of cypermethrin did not change with its concentration. The larger the dipole moment of solvent molecule, , The lower the photodegradation rate of cypermethrin. In the acetophenone sensitization system, the concentration of RO · is lower than that of ROO · and the steady state concentration of ROO · is about 10-8mol·L -1 This concentration is also much higher than the steady-state concentration of singlet oxygen