岩矿测试2011，Vol.30Issue(5)：590-595,6.
加速溶剂萃取-气相色谱/质谱法同时测定土壤中拟除虫菊酯类等18种农药残留
Simultaneous Determination of 18 Pesticide Residues including Pyrethroids in Soils by Gas Chromatography-Mass Spectrometry with Accelerated Solvent Extraction
李俊 1肖雅雯 2王震 1赵为武1
作者信息
- 1. 贵州省农产品质量安全监督检验测试中心,贵州贵阳550004
- 2. 华南农业大学资源环境学院,广东广州510642
- 折叠
摘要
Abstract
A method was developed for simultaneous determination of 18 pesticide residues in soils, including hexachlorocyclohexanes (HCHs), dichlorodiphenyltrichloroethanes (DDTs) and other 10 kinds of pyrethroid. The soil samples were distilled with Accelerated Solvent Extraction (ASE) and extracted by hexane-acetone-H3PO4 at extraction temperature of 100℃ and pressure of 10.3 Mpa. The distilled solutions were purified by solid phase extraction (SPE). The purified solutions were injected into Gas Chromatography-Mass Spectrometry (GC-MS) by using programmed temperature vaporization (PTV) and large volume injector (LVI). If the spiked level was 10-20 μg/kg, the recoveries of target compounds were 80.55% -96.33% and the relative standard deviations (RSDs, n =6) were 3.21% -7.34%. If the spiked level was 20-40 μg/kg, the recoveries were 80.55% -103.76% and RSDs (n=6) were 2.56% -5.78%. If the spiked level was 40 -80 μg/kg, the recoveries were 81.56% -95.38% , RSDs(n =6) were 2.19% -5.88%. The method detection limits were 0.11 -2.38 μg/kg, RSDs (n =3) were 4.94% -8.74% for real samples. The method is simple and rapid with high sensitivity making it suitable for simultaneous determination of residues of benzex and DDTs and pyrethroid in soils.关键词
土壤/拟除虫菊酯类/六六六/滴滴涕/快速溶剂萃取/气相色谱-质谱法Key words
soil/pyrethroids/hexachlorocyclohexanes (HCHs)/dichlorodiphenyltrichloroethanes (DDTs)/accelerated solvent extraction/gas chromatography-mass spectrometry引用本文复制引用
李俊,肖雅雯,王震,赵为武..加速溶剂萃取-气相色谱/质谱法同时测定土壤中拟除虫菊酯类等18种农药残留[J].岩矿测试,2011,30(5):590-595,6.
