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| 绿茶中13种农药残留的气相色谱质谱测定 | |
| 引用本文： | 陈坚文,刘正华,李拥军,熊文明,李盛安,冯敏铃.绿茶中13种农药残留的气相色谱质谱测定[J].广东农业科学,2012,39(5):91-93. |
| 作者姓名： | 陈坚文 刘正华 李拥军 熊文明 李盛安 冯敏铃 |
| 作者单位： | 1. 中山市农产品质量监督检验所,广东中山,528403 2. 小榄镇农业服务中心,广东中山,528415 3. 中国广州分析测试中心/广东省分析测试技术公共实验室,广东广州,510070 |
| 基金项目： | 中山市科技计划项目(20103A190) |
| 摘 要： | 采用气相色谱-质谱法检测绿茶中的多种农药残留。样品经正己烷+丙酮+乙酸乙酯(1+1+1,V/V/V)提取,活性炭和Florisil层析小柱净化,气相色谱-质谱法检测,结果表明,13种农药均具有良好的线性关系,相关系数不低于0.997,高、中、低3档(0.10、0.50、1.00 mg/L)加标回收率为85.1%~105.3%,相对标准偏差为5.4%~7.2%,检出限为0.002~0.015 mg/L。该方法具有检测结果准确可靠、简便快速等优点。 |
| 关 键 词： | 农药残留 绿茶 气相色谱-质谱法 |
Determination of 13 kinds of pesticides residues in green tea by gas chromatography/mass spectrometry |
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| CHEN Jian-wen , LIU Zheng-hua , LI Yong-jun , XIONG Wen-ming , LI Sheng-an , FENG Min-ling.Determination of 13 kinds of pesticides residues in green tea by gas chromatography/mass spectrometry[J].Guangdong Agricultural Sciences,2012,39(5):91-93. | |
| Authors: | CHEN Jian-wen LIU Zheng-hua LI Yong-jun XIONG Wen-ming LI Sheng-an FENG Min-ling |
| Institution: | 1(1.Zhongshan Quality Supervision & Inspection Institute of Agricultural Products,Zhongshan 528403,China; 2.Agricultural Service Center of Xiaolan Town,Zhongshan 528415,China;3.Guangdong Provincial Public Laboratory of Analysis and Testing Technology,China National Analytical Center,Guangzhou 510070,China) |
| Abstract: | A GC-MS method for determination of 13 pesticide residues in green tea was developed.The pesticides in samples was extracted with n-hexane/acetone/ ethyl acetate and cleaned up with supeclean Envi-carb and florisil columns,and then detected by gas chromatography-mass spectrometry.The calibration curves for 13 pesticide residues all had good linear relationships with correlation coefficients not less than 0.997.The spiked recoveries at three concentrations of 0.10,0.50,1.00 mg/L were ranged from 85.1% to 105.3% with relative standard deviations of 5.4%～7.2%.The limits of detection were in the range of 0.002～0.015 mg/L.It was an effective method which fit for the pesticide residues analysis and has high accuracy,precision and sensitivity. |
| Keywords: | pesticide residues green tea GC-MS |
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