五味子中117种农药多残留气相色谱-串联质谱检测方法研究

建立了五味子中117种农药多残留气相色谱串联质谱（GC-MS／MS）检测方法。样品经乙酸乙酯-乙腈（30：70，v／v）超声振荡提取，凝胶渗透色谱技术（GPC）净化GC—MS／MS测定。117种农药在五味子样品中的最低定量限（LOQ，S／N=10）为0．005-0．2mg／kg。每种农药在五味子基质中，添加0．005-0．2mg／kg范围内（n=5），回收率为62．1％～122．8％，相对标准偏差（RSD）为3．1%～17．8％。在0．01～5．0μg／mL的浓度范围内，各农药均具有良好线性。

Multi residue simultaneous determination study of 117 pesticides in Schisandra chinensis by gas chromatography-tandem mass spectrometry

This experiment established a multi residue simultaneous determination method of 117 pesticides in Schisandra chinensis by gas chromatography tandem mass spectrometry （G C-MS/MS）. Samples with ethyl acetate-acetonitnle（30：70, v/v） homogeneous extraction, GPC method purifying passed through, and internal standard method for quantitating. The LOQ （LOQ, S/N=10） of 117 pesticides in Schisandra chinensis is 0. 005-0. 2 mg/kg. Every kinds of pesticide in Schisandra chinensis, with addition of 0. 005-0. 2 mg/kg（n=5）, the corresponding recoveries were 62.1%-122. 8%, the relative standard deviations （RSD） were 3.1%-17. 8%. In the linear range （0. 01-5.0 μg/mL） of each pesticide, the linearity of all the pesticide are good.