拟除虫菊酯农药在茶叶中应用的安全性评价

采用田间模拟施药与气相色谱法研究了7种拟除虫菊酯农药在茶园生态环境中的降解动态，茶叶加工过程中的降解和泡茶过程的浸出率及其主要影响因子。根据实验结果推算出通过饮茶进入人体的农药量，结合农药的毒理特性，对拟除虫菊酯农药在茶园生态环境中应用的安全性进行了综合评价。结果表明，拟除虫菊酯农药在茶园中应用的安全性显著高于有机磷农药，在拟除虫菊酯农药之间，其安全性也有较大差异。本研究不仅为茶园使用农药的选择提供了依据，而且首次提出了一种农药对人体安全性的定量评价体系。

Assessment and study on the safety of pyrethroid applied in tea garden

The degradation dynamics of seven kinds of pyrethroid in tea plant were studied by simulated field test and GC method.The loss of pyrethroids during tea processing and the residues extracted from tea in infusion were also detected.According to the experiment data obtained,the residues possible to get into human body were calculated and the safe application of pyrethroids in tea garden was assessed with reference to the toxicity of pesticides to human body.The results showed the application of pyrethroids was more safe than organic phosphorus pesticides and there were also marked differences among different kinds of pyrethroid.This research not only provides a basis for selection of pesticide in tea garden but also first put forward a quantitative safety assessment method of pesticide to human body.