超声提取-气相色谱质谱法测定土壤中的几种有机氯农药

有机氯农药是一类全球性质的环境持久性污染物。此类化合物具有"三致"作用和生物蓄积性,最终通过食物链危害人类的健康。本文研究建立了土壤中几种有机氯农药的测定方法:正己烷:丙酮(V:V=1:1)为提取液,经超声萃取,自填装固相萃取柱净化,气相色谱质谱法测定。结果显示,回收率在73.1～107.8%之间,RSD在2.6～10.7%之间,检出限为0.31～1.00ng/g,适合土壤样品中有机氯农药的快速测定。

Ultrasonic Extraction-GC/MS Determination of Organochlorine Pesticides and in Agricultural Soil

Organochlorine pesticide is a kind of global environment persistent pollutants.Such compound has "carcinogenicity-mutagenicity-teratogenicity" function and biological accumula-tion.Eventually,it can harm human health through the food.A method to determine several types of organochlorine pesticides in soil samples was established in this paper.Samples were extracted with hexane: acetone(V: V = 1:1) by ultrasonic extraction,purified by self-filled solid phase extraction column and determined by GC/MS.The results showed that the recovery was in 73.1 ~ 107.8%,RSD was in 2.6 ~ 10.7%,and the detection limit was in 0.31~1.00ng/g.It is suitable for rapid determination of organochlorine pesticides in soil samples.