土壤样品中有机磷农药的加速溶剂萃取-气相色谱测定  

Determination of Organophosphate Pesticides in Soil Samples by Accelerated Solvent Extraction-Gas Chromatography

作　　者：饶竹[1] 何淼[2] 陈巍[3] 李松[1] 刘艳[1] 

机构地区：[1]国家地质实验测试中心,北京100037 [2]长庆油田油气工艺技术研究院,陕西西安710021 [3]北京科技大学土木与环境工程学院,北京100083

出　　处：《岩矿测试》2010年第5期503-507,共5页Rock and Mineral Analysis

基　　金：国土资源地质大调查项目资助(200120190107-05;1212010816028-02);国土资源地质大调查--地下水污染测试技术研究项目资助(1212010634607)

摘　　要：建立加速溶剂萃取提取土壤样品中13种有机磷农药残留,经Carb柱净化、Rtx-OPP2大口径毛细管柱分离、气相色谱-火焰光度检测器检测。方法仪器检出限在0.67～1.50ng/mL,线性范围在0.67～600ng/mL,相关系数在0.9994～0.9999。模拟土壤样品和实际土壤样品基体加标回收率分别在54.3%～106%和60.7%～133%,方法精密度(RSD,n=5)在2.2%～9.9%。方法简便、灵敏,适用于土壤样品中有机磷农药残留的分析。A method for the determination of organophosphate pesticides （OPPs） in soil samples by accelerated solvent extraction-gas chromatography （ASE-GC） was developed.Through the extraction by ASE,clean-up with Carb column,13 OPPs in soil samples were separated and determined by Rtx-OPP2 wide bore capillary-gas chromatography with electron capture detector.The detection limits of the method for OPPs were 0.67 ～ 1.50 ng/mL with linear ranges of 0.67 ～ 600 ng/mL and correlation coefficients of 0.999 4 ～ 0.999 9.The average recoveries for 13 OPPs in simulated soil samples and real soil samples were 54.3% ～ 106% and 60.7% ～ 133% with precision of 2.2% ～ 9.9% RSD（n=5）.The method provides the advantages of high sensitivity,high reliability,convenience and is suitable for analysis of OPPs in soil samples.

关 键 词：加速溶剂萃取 气相色谱法 有机磷农药 土壤 

分 类 号：O652.62[理学—分析化学] O657.71[理学—化学]