Study on the residue condition of chlorpyrifos in forest soils .
毒死蜱在林下土壤中的残留动态初步研究。
Table 2 recoveries and variation coefficient of chlorpyrifos fortified in soil .
表2土壤中毒死蜱的添加回收率和变异系数。
Effect of irradiation on degradation rate of chlorpyrifos in water solution .
辐射对水溶液中毒死蜱降解率的影响。
When I compared the organic chemicals copper sulfate and pyrethrum to the top synthetics , chlorpyrifos and chlorothalonil , I found that not only were the organic ones more acutely toxic , studies have found that they are more chronically toxic as well , and have higher negative impacts on non-target species .