Measurement of rate constant for gas-phase reaction of DDVP with OH radical by using LP-FTIR  

作　　者：XU Yunping, ZHU Tong and LI Saijun(Center for Environmental Sciences, ESPC State Key Laboratory, Peking University, Beijing 100871, China) 

出　　处：《Progress in Natural Science:Materials International》2002年第3期185-187,共3页自然科学进展·国际材料（英文版）

基　　金：Supported by the National Fund for Distinguished Young Scholars of China (Grant No. 49925513)

摘　　要：Pollution caused by organic pesticides has received increasing attention. Until now, studies on organic pesticides pollution are mainly focused on soil and water. For reactions of organic pesticides in gas-phase, there are very little research results reported. Using a long path quartz reactor to simulate the atmospheric reaction of dimethyl_dichloro_vinyl_phosphate(DDVP) with OH radicals, the rate constant for the reaction at room temperature is measured at (3.06±0.46)×10-11 cm3 s-1 with Fourier transform infrared spectrograph.The result indicates that DDVP degrades relatively fast in the atmosphere and is unlikely to cause persistent pollution.Pollution caused by organic pesticides has received increasing attention. Until now, studies on organic pesticides pollution axe mainly focused on soil and water. For reactions of organic pesticides in gas-phase, there are very little research results reported. Using a long path quartz reactor to simulate the atmospheric reaction of dimethyl-dichloro-vinyl-phosphate(DDVP) with OH radicals, the rate constant for the reaction at room temperature is measured at (3.06 +/- 0.46) X 10(-11) cm(3) s(-1) with Fourier transform infrared spectrograph. The result indicates that DDVP degrades relatively fast in the atmosphere and is unlikely to cause persistent pollution.

关 键 词：DDVP  OH radical  LP-FTIR  RATE constant. 

分 类 号：X592[环境科学与工程—环境工程]