摘要
氨基甲酸酯类农药的大量使用在全球范围内受到广泛的关注,并且进入各国的优先污染物监测范围。为建立一种高通量、高灵敏度同时检测EPA531.1中规定的10种氨基甲酸酯类农药及代谢物的方法,本文建立了UPLC-MS/MS方法。地下水、地表水等清洁水样样品经过简单的0.2μm滤膜过滤之后即可进样,实际样品加标的方法回收率达到87.3-105.3%,10种氨基甲酸酯农药及代谢物检测范围为0.1-2μg/L;农业用水、生活污水、工业废水等复杂基体水样的分析需要经过一个改良的固相萃取净化过程,100mL的水样经过浓缩净化之后方法检测限达到2-40ng/L,方法回收率达到81.1-114.7%。与目前国家标准方法相比较,本方法通过质谱定性的方式避免了紫外或荧光检测器可能出现的误判现象;在定量方面,本方法极大地提高了灵敏度;同时,实现了地表水等实际环境样品的前处理过程的极大简化,减少了萃取溶剂,节约了时间和成本,适宜用于水样中氨基甲酸酯类农药及代谢物的检测。
As the most widely used pesticides, carbamates have attracts extensively focus and are on the priority list released by many countries.Here we describe the development of a highly sensitive and high throughput method for the determination of 10 carbamates and their metabolites in water samples by UPLC-MS/MS.Drinking water samples could be injected to the UPLC system just after being filtered through a 0.2μm membrane.The percent recovery of the spike ranged from 87.3%-105.3% with limits of detection of 0. 1-2μg/L.Waste water samples should be analyzed after solid- phase extraction.The recovery ranged from 81.1% to 114.7% with limits of detection of 2-40ng/L.Compared with the method of China national standards for drinking water quality, this novel method has great improvement both in qualitation and quantification.Furthermore,the simplification of the sample preparation process makes the analysis of carbamates quickness,simplicity, and economy.It meets the requirement of routine screening of carbamates residues in water samples.
出处
《现代科学仪器》
2013年第3期107-111,共5页
Modern Scientific Instruments
基金
水体污染控制与治理重大专项(2009ZX07527-005)
宁波市自然科学基金(2011A610087)
