| 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 |
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| 引用本文： | 鲍治帆,官兴丽,谢吉林,吴晓刚,张偎,肖海军.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[J].食品科学,2014,35(10):174-178. |
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| 作者姓名： | 鲍治帆 官兴丽 谢吉林 吴晓刚 张偎 肖海军 |
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| 作者单位： | 大益集团勐海茶业有限责任公司技术中心实验室，云南 勐海 666200 |
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| 基金项目： | 云南省企业技术中心创新能力建设项目(2009D1037) |
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| 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。
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| 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 |
Rapid Determination of 27 Kinds of Common Halogen-Containing Pesticide Residues in Tea by Dispersive SolidPhase Extraction and Gas Chromatography |
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| BAO Zhi-fan,GUAN Xing-li,XIE Ji-lin,WU Xiao-gang,ZHANG Wei,XIAO Hai-jun.Rapid Determination of 27 Kinds of Common Halogen-Containing Pesticide Residues in Tea by Dispersive SolidPhase Extraction and Gas Chromatography[J].Food Science,2014,35(10):174-178. |
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| Authors: | BAO Zhi-fan GUAN Xing-li XIE Ji-lin WU Xiao-gang ZHANG Wei XIAO Hai-jun |
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| Affiliation: | Laboratory of Technology Center, Menghai Tea Industry Limited Liability Company, Menghai 666200, China |
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| Abstract: | 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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| Keywords: | tea pesticide residues dispersive solid-phase extraction gas chromatography-electron caputure detector |
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