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当前位置: 首页 > 文章 > QuEChERS-气相色谱-串联质谱法测定茶青中28种农药残留 农药学学报 2017 (3) 366-373
Position: Home > Articles > Determination of 28 pesticide residues in fresh tea leaves using QuEChERS-gas chromatography-tandem mass spectrometry Chinese Journal of Pesticide Science 2017 (3) 366-373

QuEChERS-气相色谱-串联质谱法测定茶青中28种农药残留

作  者：
李俊;蔡滔;杜楠;周雪丽;王震;袁旭;卢平;陈玉玲
单  位：
贵州省农产品质量安全监督检验测试中心/农业部农产品质量安全风险评估实验室(贵阳);贵州大学精细化工研究开发中心/教育部绿色农药与生物工程重点实验室
关键词：
QuEChERS;气相色谱-串联质谱;茶青;农药;残留
摘  要：
建立了QuEChERS-气相色谱-串联质谱(GC-MS/MS)同时测定茶青中28种农药残留的分析方法。样品采用乙腈匀浆提取,经75 mg PSA、25 mg C18、4 mg GCB净化,GC-MS/MS多反应离子监测模式下检测,外标法定量。结果表明:在0.020~0.40 mg/L范围内,28种农药的质量浓度与对应的峰面积间呈良好的线性关系,决定系数均大于0.991。在0.10和0.50 mg/kg两个添加水平下,28种农药的平均回收率在77%~106%之间,相对标准偏差(RSD)在1.4%~8.0%(n=6)之间。方法的检出限(LOD)为5.0~20μg/kg,定量限(LOQ)为10~60μg/kg。该方法简单、快速、准确、灵敏度高,可用于茶青中多种农药残留的同时检测分析。
译  名：
Determination of 28 pesticide residues in fresh tea leaves using QuEChERS-gas chromatography-tandem mass spectrometry
作  者：
LI Jun;CAI Tao;DU Nan;ZHOU Xueli;WANG Zhen;YUAN Xu;LU Ping;CHEN Yuling;Guizhou Provincial Supervision and Testing Center for Agricultural Product Quality/Safety Risk Assessment Center for Agricultural Product Ministry of Agriculture;Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education/Center for Research and Development for Fine Chemicals, Guizhou University;
关键词：
QuEChERS;;gas chromatography-mass spectrometry;;fresh tea leaves;;pesticide;;residue
摘  要：
A multiresidue analytical method for the determination of 28 pesticide residues in fresh tea leaves was developed and evaluated by using QuEChERS(quick, easy, cheap, effective, rugged and safe) and triple-quadrupole tandem mass spectrometry(GC-MS/MS). Samples were extracted by acetonitrile, and purified by 75 mg PSA, 25 mg C18 and 4 mg GCB, followed by GC-MS/MS detection under multi-reaction monitoring(MRM) mode and quantified by external standard method. Good linearity was achieved between area size and concentration from 0.020 to 0.40 mg/L, with a coefficient of determination higher than 0.991. The average recovery at different spiking levels(0.10, 0.50 μg/kg)was ranged from 77% to 106% with RSD(relative standard deviation, n = 6) 1.4%-8.0%. The LOD(limit of detection) was 5.0-20 μg/kg, and LOQ(the limit of quantification) was 10-60 μg/kg. The method was simple, quick, accurate, highly sensitive and suitable for the simultaneous analysis of multiresidues of pesticides in fresh tea leaves.

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