【摘要】 目的对成都府南河中11种常见有机磷农药残留水平进行检测,了解农药残留分布情况、特征及污染的原因。方法利用多壁碳纳米管固相萃取结合高效液相色谱-质谱联用法对水样中的有机磷农药进行检测,并结合采样点地理特征对测定结果进行分析。结果在17个采样点的34份水样中共检出7种有机磷农药,其浓度范围为(0.318~211)×10-3μg/L,检出频率较高的有氧乐果、乐果、氯唑磷、毒死蜱等,其浓度范围均符合国家标准限值及欧盟地面水农药限量标准。结论根据府南河水样中11种有机磷农药检测结果及其采样的地理位置,发现在植被茂盛的公园或位于交通枢纽附近以及人类活动频繁的采样点所检出的有机磷农药品种较多。与国内外其他河流有机磷农药检出情况相比,府南河水中有机磷农药污染总体水平较低,所检出的有机磷农药含量均未超过我国地面水环境质量标准。更多还原

【Abstract】 Objective To study the distribution and characteristics of 11 frequently used organophosphorus pesticide residues in Funan rivers in Chengdu, and to analyze the reasons of organophosphorus pollution in the river water. Methods The organophosphorus pesticides in water samples were detected by multi-walled carbon nanotubes solid phase extraction coupled with high performance liquid chromatography-mass spectrometry. Results A total of seven organophosphorus pesticides were detected in 34 water samples from 17 sampling sites, with the concentration range of(0.318-211) ×10-3μg/L.The frequently detected organophosphorus pesticides were omethoate, dimethoate, chlorazophos and chlorpyrifos, but they were all within the national and the EU standard for pesticide limits in surface water. Conclusion According to the determination results of the organophosphorus pesticides in the water samples of Funan rivers and the geographical locations of the sampling sites, the organophosphorus pesticides have been detected mainly in parks with lush vegetation or near transportation hubs, as well as in sampling sites with frequent human activities. In comparison with the detection results of organophosphorus pesticides in other rivers at home and abroad, the pollution condition of organophosphorus pesticides in Funan rivers is relatively lower, and the contents of organophosphorus pesticides detected didn ’t exceed the national environmental quality standard of surface water.更多还原