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当前位置: 首页 > 文章 > 分散固相萃取-气相色谱法快速测定茶叶中27种常见含卤素农药残留 食品科学 2014,35 (10) 174-178
Position: Home > Articles > Rapid Determination of 27 Kinds of Common Halogen-Containing Pesticide Residues in Tea by Dispersive SolidPhase Extraction and Gas Chromatography FOOD SCIENCE 2014,35 (10) 174-178

分散固相萃取-气相色谱法快速测定茶叶中27种常见含卤素农药残留

作  者：
鲍治帆;官兴丽;谢吉林;吴晓刚;张偎;肖海军
单  位：
大益集团勐海茶业有限责任公司技术中心实验室
关键词：
茶叶;农药残留;分散固相萃取;气相色谱-电子捕获检测器
摘  要：
采用分散固相萃取-气相色谱法对茶叶中27种含卤素农药残留量进行测定。经丙酮-正己烷(l∶1,V/V)提取后,直接加入无水硫酸钠、硅镁型吸附剂及活性炭净化,使用DB-17毛细管气相色谱柱、微电子捕获检测器,对茶叶中27种含卤素农药残留量进行测定。该方法样品平均加标回收率为82.2%~113.4%,相对标准偏差为1.2%~6.0%;茶叶中27种含卤素农药多残留检出限为0.005~0.075 mg/kg。
译  名：
Rapid Determination of 27 Kinds of Common Halogen-Containing Pesticide Residues in Tea by Dispersive SolidPhase Extraction and Gas Chromatography
作  者：
BAO Zhi-fan;GUAN Xing-li;XIE Ji-lin;WU Xiao-gang;ZHANG Wei;XIAO Hai-jun;Laboratory of Technology Center, Menghai Tea Industry Limited Liability Company;
关键词：
tea;;pesticide residues;;dispersive solid-phase extraction;;gas chromatography-electron caputure detector
摘  要：
Residues of 27 kinds of common halogen-containing pesticides in tea were determined by dispersive solidphase extraction and gas chromatography. Tea samples were extracted with acetone-hexane(l:1, V/V) and the extracts were purified by adding anhydrous sodium sulfate, florisil and activated carbon. The purified extracts were separated on a DB-17 capillary column, and detected with an electron capture detector(ECD). The average recovery of standard addition was 82.2%–113.4% with relative standard deviation of 1.2%–6.0% in tea samples by this method. The limit of detection for 27 kinds of common halogen-containing pesticide residues in tea was 0.005–0.075 mg/kg.

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