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.
出处
《岩矿测试》
CAS
CSCD
北大核心
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)
关键词
加速溶剂萃取
气相色谱法
有机磷农药
土壤
accelerated solvent extraction
gas chromatography
organophosphate pesticides
soil
