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当前位置: 首页 > 文章 > 液相色谱串联质谱法快速测定油茶籽中9种农药残留量 湖南林业科技 2015 (5) 46-49
Position: Home > Articles > Fast simultaneous determination of nine kinds of pesticides in camellia seed by liquid chromatography-tandem mass spectrometry Hunan Forestry Science & Technology 2015 (5) 46-49

液相色谱串联质谱法快速测定油茶籽中9种农药残留量

作  者：
李玉平;佘佳荣;谭利娟;邓红波
单  位：
湖南省林产品质量检验检测中心
关键词：
油茶籽;液相色谱—串联质谱法;农药残留
摘  要：
建立了高效液相色谱串联-质谱法同时检测油茶籽中吡虫啉、乐果、甲胺磷、马拉硫磷、三唑酮、对硫磷、毒死蜱、丁草胺、噻嗪酮9种农药的残留量。样品经乙腈提取后,取上清液直接过膜后进行液相色谱串联质谱分析。采用Agilent SB—C18色谱柱分离,用4 g/L甲酸铵水溶液-乙腈作为流动相进行梯度洗脱,电喷雾正离子(ESI+)模式电离,多反应监测(MRM)模式检测。结果表明:各物质峰面积与样品浓度在0.001~0.5 mg/L范围内呈良好的线性关系,线性回归系数大于0.999 0。在添加浓度0.01~1.0 mg/kg范围内,9种农药的平均添加回收率在64.2%~114.1%范围内,变异系数在1.2%~9.4%之间,该方法能满足油茶籽中9种农药残留量分析的要求。
译  名：
Fast simultaneous determination of nine kinds of pesticides in camellia seed by liquid chromatography-tandem mass spectrometry
作  者：
LI Yuping;SHE Jiarong;TAN Lijuan;DENG Hongbo;The Center of Hunan Forestry Administration for Forestry Produce Quality Inspection and Testing;Central South University of Forestry and Technology;
关键词：
camellia seed;;liquid chromatography with tandem mass spectrometry;;residue
摘  要：
A method was developed for determining 9 pesticides residues in camellia seed using liquid chromatography tandem mass spectrometry. Samples were extracted with acetonitrile. Then,the upper supernatant was directly analyzed by LC — MS / MS on an Agilent SB — C18 column with a mixture of 4g / L formic acid ammonium solution( A) and acetonitrile( B) as mobile phase under gradient elution conditions. The mass spectrometer operated in multiple reaction monitoring( MRM) mode with the positive mode. There is a good linear correlation( all of the calibration coefficients are above0. 9990) between the peak areas and concentration of sixteen amide fungicides in the range of 0. 001 ~ 0. 5 mg / L. The average recoveries of 9 pesticides in camellia seed were 64. 2% ~ 114. 1%. The relative standard deviations were between1. 2% and 9. 4%. The method is demonstrated to be suitable for the determination of the 9 kinds of pesticides in camellia seed.

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