小体积液液萃取-GC/MS法测定地表水中有机磷农药  

Determination of Organophosphorus Pesticide in Surface Water by GC/MS with Small Volume Liquid-liquid Extraction

作　　者：缪建军 张颖[2] 吕天峰[2] 张宝[2] 

机构地区：[1]南通市环境监测中心站,江苏南通226006 [2]中国环境监测总站,北京100012

出　　处：《环境监测管理与技术》2011年第1期57-60,共4页The Administration and Technique of Environmental Monitoring

摘　　要：采用小体积液液萃取-气相色谱/质谱联用法测定地表水中有机磷农药,以1.2 mL正己烷为萃取剂,磷酸三苯酯为内标,对8种目标化合物的富集倍数达156~436。方法在1.00μg/L^20.0μg/L范围内线性良好,8种有机磷农药的检出限均为0.2μg/L,实际水样平行测定的RSD为2.1%~9.7%,平均加标回收率为86.0%~110%。Organophosphorus pesticides in surface water were determinated by GC/MS with a small volume liquid-liquid extraction（SVLLE）.The method used 1.2 mL n-hexane as extraction solution,triphenyl phosphate as internal standard,and preconcentration factors of8 compounds of the pesticides between 156 and 436.Results showed good linearity of method was obtained range from 1.00 μg/L to 20.0 μg/L;detection limits of8 kinds of organophosphorus pesticides were 0.2 μg/L;RSDs of parallel samples were between 2.1% and 9.7%;average spiked recoveries were between 86.0% and 110%.

关 键 词：有机磷农药 小体积液液萃取 气相色谱/质谱联用法 地表水 

分 类 号：O657.71[理学—分析化学]