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当前位置: 首页 > 文章 > 超高效液相色谱-静电场轨道阱高分辨质谱法测定茶叶中21种农药残留量 茶叶科学 2018 (6) 595-605
Position: Home > Articles > Determination of 21 Pesticide Residues in Tea by Ultra Performance Liquid Chromatography Orbitrap High Resolution Mass Spectrometry Journal of Tea Science 2018 (6) 595-605

超高效液相色谱-静电场轨道阱高分辨质谱法测定茶叶中21种农药残留量

作  者：
金莉莉;郝振霞;高贯威;柴云峰;王晨;陈红平;鲁成银
单  位：
中国农业科学院茶叶研究所农业部茶叶产品质量安全风险评估实验室(杭州)农业部茶叶质量安全控制重点实验室;中国农业科学院茶叶研究所 农业部茶叶产品质量安全风险评估实验室(杭州)
关键词：
茶叶;农药残留;超高效液相色谱-静电场轨道阱高分辨质谱
摘  要：
采用超高效液相色谱-静电场轨道阱高分辨质谱,建立了茶叶中21种农药残留量的检测方法。茶叶样品经甲醇和水(V甲醇∶V水=1∶1)提取后,采用乙二胺-N-丙基硅烷和强阳离子交换剂作为混合吸附剂进行萃取净化。以C18色谱柱进行色谱分离,采用FullScan扫描模式进行定性、定量分析。结果显示,21种农药在0.5～200μg·L~(-1)范围内均呈良好的线性关系,相关系数(r2)大于0.99。在10、50、100μg·kg~(-1)3个加标水平下,平均回收率为70%～125%之间,相对标准偏差(RSD)小于15%,定量限为10μg·kg~(-1)。本方法操作简单快速,灵敏度高,适用于茶叶中21种农药残留检测。
译  名：
Determination of 21 Pesticide Residues in Tea by Ultra Performance Liquid Chromatography Orbitrap High Resolution Mass Spectrometry
作  者：
JIN Lili;HAO Zhenxia;GAO Guanwei;CHAI Yunfeng;WANG Chen;CHEN Hongping;LU Chengyin;Tea Research Institute, Chinese Academy of Agricultural Sciences, Laboratory of Quality and Safety Risk Assessment for Tea Products (Hangzhou), Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture;Chinese Academy of Agricultural Sciences;
单  位：
Hangzhou
关键词：
tea;;pesticide residues;;ultra performance liquid chromatography orbitrap high resolution mass spectrometry
摘  要：
A ultra performance liquid chromatography orbitrap high resolution mass spectrometry method for the determination of 21 pesticides in tea was developed. The tea samples were extracted by methanol–water(Vmethanol∶Vwater=1∶1), and cleaned up by a mixture of adsorbents containing primary secondary amine and strong cation exchanger. The chromatography analysis was performed on a C18 column. The target analytes were analyzed by high resolution mass spectrometry under Full Scan mode. The results showed that the linearities of 21 pesticides ranged from 0.5 μg·L~(-1) to 200 μg·L~(-1) with correlation coefficients higher than 0.99. At the spiked levels of 10, 50 and 100 μg·kg~(-1), the average recoveries were from 70% to 125%, with the relative standard deviations(RSDs) below 15%. The limits of quantitation were 10 μg·kg~(-1). The method is simple, rapid, sensitive and appropriate for the determination of 21 pesticide residues in tea.

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