气相色谱法测定“生脉饮”及其方剂中11种残留农药的研究

Multi-residue determination of 11 pesticides in Shengmaiyin prescription by gas chromatography

目的：测定“生脉饮”及其方剂中农药残留量。方法：采用气相色谱法，OV-1701弹性石英毛细管柱色谱柱（0．32mm×30m，0．5μm），Agilent^63Ni电子捕获检测器，高纯氮气载气，流速60mL·min^-1，进样口温度260℃，检测器温度300℃，进样方式为不分流进样。结果：11种残留农药在测定质量浓度范围内与色谱峰面积线性关系良好，相关系数不低于0．9962，平均回收率为83．1％～114．7％。结论：该方法简单、快速，为生脉饮的安全使用和农药残留监测提供了一种有效分析方法。

Objective： To determine the pesticide residues in Shengmaiyin. Method： The residues were simultaneously identified and quantified by capillary gas chromatography. The capillary column was OV-1701 （0. 32 mm ×30 m,0. 5 μm）, splitless injection and Agilent 63 Ni electron capture detector ECD were adopted. The carrier gas were high-pure nitrogen, the flow rate were 60 mL ·min^-1, the injector temperature was 260 ℃, and the detector temperature was 300 ℃. Result： It showed a good linear relationship between peak area and pesticide concentration for 11 kinds of pesticides in the detection concentration range. All correlation coefficients were higher than 0. 996 2. The average recovery was 83.1% -114.7%. Conclusion： A simple and efficient monitoring method of pesti- cide residues is established which provides the foundation for the safe use and analysis of Shengmaiyin.