The removal of PCP in the upper 0.15 mm layer of the soil column accounted to 63.7% and 73.0% respectively after 24 h and 48 h irradiation.

• 结果表明:在风干土壤中；只有土柱表层土壤中的PCP发生了光化学反应；且具有较快的光转化速率； 24 h、48 h后；土壤表面0.；15 mm厚的土层中PCP的光转化率分别达到63