空化水中HO2自由基的测定

摘要

采用频率为1.8MHz，声强为1-5W/cm2的超声波引发水中的空化效应，通过采用吡啶溶液作为HO2自由基捕获剂，测出了实验条件下空化水中HO2自由基的浓度水平为10-5M。%Ultrasound of frequency 1.8MHz and intensity 1-5 W/cm2 was used toinduce sonochemical reaction in water. It was found that theconcentration of HO2 free radical in cavitation water was10-5M, the yield of HO2 free radical having a linearrelation-ship with the sonification time and the sound intensity.