【摘要】 采用高效液相色谱测定吡虫啉的残留量 ,研究了吡虫啉在不同提取方法下于稻杆和土壤中的回收率并研究其消解动态。试验结果表明 :稻杆中采用二氯甲烷振荡提取法测定吡虫啉回收率可达 77.6 6 %～ 93.6 2 % ;土壤中采用甲醇索氏提取法回收率为 82 .2 2 %～ 90 .89% ,变异系数分别为 :0 .31%～ 1.93% ,1.33%～ 2 .85 % ;吡虫啉在稻杆和土壤中的半衰期分别为 4 .9d,　 5 .6d。更多还原

【Abstract】 Residue of Imidacoloprid in rice straws and soil was studied by HPLC .Different extractive methods were used to increase the recovery ratio. Degradation was also studied.The recovery were 77.66%～93.62% (RSD:0.31%～1.93%) for rice straws using mechinary shaking extraction with CH 2Cl 2 and 82.22%～90.89%(RSD:1.33%～ 2.85 %)for soil using Sotex extraction with CH 3OH.The half life were 4.9 d ( rice straw) and 5.4d (soil) separately.更多还原