固相萃取-高效液相色谱-质谱联机在线分析水中痕量除草剂  

Determination of Herbicides in Drinking Water by Solid Phase Extraction-Liquid Chromatography-Mass Spectrometry

作　　者：任晋[1] 黄翠玲[1] 赵国栋[1] 蒋可[1] 

机构地区：[1]中国科学院生态环境研究中心,北京100085

出　　处：《分析化学》2001年第8期876-880,共5页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金 (No .2 99770 2 3);中国科学院重大项目 (No .KT95 1 A1 5 0 7)

摘　　要：建立了饮用水中痕量除草剂的SPE LC MS联机测试方法 ,该方法仅用 45min就可完成水样中 7种除草剂 (阿特拉津 ,西草净 ,西码净 ,杀草净 ,敌稗 ,乙草胺 ,甲磺隆 )的分析 ,检测限低于欧共体所要求的饮用水标准 (单种农药浓度小于 0 1 μg L)。比起液液萃取 ,离线SPE等其他前处理方法 ,在线SPE的结果的重现性和精密度方面大大优于前者 ,环境水样分析时间大大减少 (所需时间为液液萃取的 1 60 ,离线SPE的 1 2 0 ) ,而且更安全性和可靠。我们已在华北某地的地表水和地下水中检测出阿特拉津 (1 9μg L)和乙草胺 (1 .64 μg L)。A method for the determination of micro-herbicides (metsufuron-methyl, simazine, atrazine, simetryn, dimethachior, dipropetryn, propanil) in water has been developed by solid phase extraction-high performance liquid chromatography-mass spectrometry. No special sample pretreatment was applied. It is only need to 45 min to analysis a sample. The detection limit obtained was lower than 0.1 mug/L. This method saves much time in sample preparation than that consumed by liquid-liquid extraction (60 fold) and off-line SPE (20 fold), and is more effective than the other methods. By using this method atrazine (1.9 mug/L) and dimethachlor (1.64 mug/L) have been detected in surface water.

关 键 词：固相萃取 高效液相色谱 质谱 水 有机污染物 除草剂 痕量分析 

分 类 号：O657.63[理学—分析化学]