农药厂周边有机磷农药在生物体中残留的检测方法研究

摘要

The study detected 1 1 organophosphorus pesticides in three environment medias:rice,vegetables and meat.We detected the concentration of different organophosphorus pesticides with GC/MS.The detection limit of meat and rice &vegetables were 0.05 μg/kg and 0.1 μg/kg respectively.Recovery results all met measurement requirements.The result showed that the total con-centration of 1 1 organophosphorus pesticides were higher in rice and vegetables than meat revealing that the amount of pesticide resi-dues in rice and vegetable surface were higher than that inside living organisms.Samples collected form Nanjing was with higher concentration than Changzhou.Organophosphorus pesticides in different environmental medias showed a different detection rate re-vealing that various environmental media have different impact on the content of pesticide residues.%测定南京某农药厂附近大米、蔬菜及肉类中11种有机磷农药含量，通过使用气相色谱/质谱联用的方法，建立 GC/MS 定性定量分析方法，检出限达到0．05μg/kg（肉类）和0．1μg/kg（大米和蔬菜），回收率均符合测定要求。环境样品监测结果显示，大米和蔬菜中有机磷农药的含量高于肉类中的含量，说明在大米和蔬菜表面残留的农药量要高于进入生物体体内的含量。南京蔬菜样品中有机磷农药高于常州蔬菜样品，说明农药厂对蔬菜表面残留农药量有影响。不同的有机磷农药在不同的介质中，检出情况不一样，说明不同的环境介质对有机磷农药的保留水平不一样。