化学
杀虫剂
光解
卤素灯
环境化学
光化学
卤素
辐照
光降解
汞蒸气灯
三硝基甲苯
阳光
溴氰菊酯
气溶胶
分解
Mercury(编程语言)
反应速率常数
光催化
动力学
材料科学
有机化学
催化作用
光学
爆炸物
计算机科学
生物
烷基
量子力学
核物理学
农学
程序设计语言
物理
光电子学
作者
Yu. N. Samsonov,Л. М. Покровский
标识
DOI:10.1016/s1352-2310(00)00494-5
摘要
The kinetics of sensitized photolysis for four pesticides, deltamethrin (Decis), acrinathrin (Rufast), s-fenvalerate (Sumialpha), and propiconazol (Tilt) in thin films and aerosol particles was investigated under sunlight or the irradiation from halogen or mercury lamp. The peculiarities of principle of the photochemistry of pesticides in high disperse substance state were discussed. The quantum yields of sensitized and direct photolysis were measured, and the phenomenological kinetic mechanism of photolysis was proposed and examined. Four relations between six rate constants of reaction steps of the kinetic mechanism were determined. The use of sensitizers to accelerate the decomposition rates of pesticide pollutants under sunlight could minimize the contamination of agricultural commodities and the adjacent environment. The Shirvanol 2 sensitizer (a by-product of the full treatment of Caspian oils) can regulate decomposition of many pesticides in a wide range of photolysis rates, so that practically any desired lifetime could be really available for either pesticide residues on plant foliage or pesticide aerosol particles in the air.
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