毒死蜱、联苯菊酯在室内和室外土壤中的消解动态及土壤化学屏障研究  

Study on Degradation of Chlorpyrifos and Bifenthrin Indoor and Outdoor and the Chemistry Barrier in Soil

作　　者：边文杰[1] 张莉[1] 李少南[1] 朱国念[1] 

机构地区：[1]浙江大学农药与环境毒理研究所,杭州310029

出　　处：《农药》2011年第7期512-514,530,共4页Agrochemicals

摘　　要：[目的]探讨毒死蜱和联苯菊酯在室内外土壤中的消解动态,并预测2种农药作为土壤化学屏障防治白蚁的有效期。[方法]采用气相色谱法测定不同时期土壤中毒死蜱和联苯菊酯的残留量并采用土壤穿透法测定2种农药在土壤中的生物活性。[结果]毒死蜱在室内和室外的半衰期分别为51.3、39.5 d,联苯菊酯在室内和室外的半衰期分别为31.3、44.5 d。毒死蜱和联苯菊酯抗白蚁穿透的最低有效质量分数分别为6.15、5.78 mg/kg,并结合消解动态方程预测出毒死蜱和联苯菊酯作为土壤化学屏障中有效成分的有效期在室内分别为195、29.1 d,在室外则分别为158.4、56.1 d。[结论]得到的白蚁防治有效期结果较好,为白蚁的化学防治提供理论依据。The indoor and outdoor degradation of chlorpyrifos and bifenthrin in soil were studied and the period of effectiveness of chlorpyrifos and bifenthrin were precicted.[Methods] The residue and the biological activity of chlorpyrifos and bifenthrin in soil was determined by GC and soil penetrated,respectively.[Results] The half-lives of chlorpyrifos in soil indoor and outdoor were 51.3,39.5 d,respectively and of bifenthrin were 31.3,44.5 d,respectively.The minimum inhibitory concentrations of chlorpyrifos and bifenthrin were 6.15,5.78 mg/kg,respectively.It was predicted that the period of effectiveness of chlorpyrifos and bifenthrin iodoor were 195,29.1 d,respectively and outdoor were 158.4,56.1 d,respectively.[Conclusions] The theoretical basis for control of termite is provided.

关 键 词：毒死蜱 联苯菊酯 穿透 消解 

分 类 号：TQ453.2[化学工程—农药化工]