分散固相萃取-UHPLC-MS/MS法测定水中5种苯脲类除草剂  

Determination of Five Phenylurea Herbicides in Aqueous Samples by Dispersive Solid Phase Extraction Combined with Ultra-high Performance Liquid Chromatography Tandem Mass Spectrometry

作　　者：陈园[1,2] 张丽君[1] 顾海东[1] 张占恩[2] 刘伟[1,2] 

机构地区：[1]苏州科技学院环境科学与工程学院江苏省环境科学与工程重点实验室,江苏苏州215009 [2]苏州科技学院环境科学与工程学院江苏省水处理技术与材料协同创新中心,江苏苏州215009

出　　处：《化学试剂》2016年第3期245-248,共4页Chemical Reagents

基　　金：江苏高效优势学科建设工程资助项目

摘　　要：建立分散固相萃取-超高液相色谱串联质谱（UHPLC-MS/MS）同时测定环境水样中5种苯脲类除草剂（敌草隆、利谷隆、灭草隆、异丙隆、绿麦隆）残留的分析方法。考察了吸附剂的种类与数量、水样pH、吸附剂的种类和体积等条件对除草剂回收率的影响。在最佳实验条件下,5种苯脲类除草剂在0.01~5.0μg/L范围内呈良好的线性关系（0.999 3~0.9999）,方法检出限为2.04~3.12 ng/L。对环境水样的加标回收率分别为78.2%~108.3%,相对标准偏差RSD分别为6.8%~11.2%。本方法操作简便快速、稳定性好、灵敏度高,能够满足环境水体中苯脲类除草剂残留的分析要求。A dispersive solid-phase extraction（ DSPE） was developed for rapid and convenient determination of five phenylurea herbicides（ diuron,isoproturon,chlorotoluron,monuron,linuron） in water by ultra-high performance liquid chromatography tandem mass spectrometry（ UHPLC-MS / MS）. The effects of experiment parameters,including types and amount of absorbents,p H value,type and volume of eluent were explored. Under the optimum extraction conditions,the linearity was obtained ranging from0. 01 ~ 5. 0 μg / L with correlation coefficients in the range from 0. 999 3 to 0. 999 9. The method detection limits were between2. 04 and 3. 12 ng / L. Recoveries of the real environmental water samples were obtained ranging from 78. 2% ~ 108. 3% with the relative standard deviations（ RSDs） in the range from 6. 8% ~ 11. 2%. The procedure proved to be a convenient,efficient and reliable analytical technique,and could be meet the requirements of the determination of phenylurea herbicides in aqueous samples.

关 键 词：分散固相萃取 苯脲类除草剂 环境水样 UHPLC-MS/MS 

分 类 号：O657.63[理学—分析化学] O657.72[理学—化学]