食品科学 ›› 2009, Vol. 30 ›› Issue (24 ): 401-404.doi: 10.7506/spkx1002-6630-200924091

• 分析检测 • 上一篇    下一篇

气相色谱双柱法测定茶叶中多种有机氯和拟除虫菊酯类农药残留量

卢 剑,武中平,高 巍,俞幼芬   

  1. 江苏省产品质量监督检验研究院
  • 收稿日期:2009-09-16 出版日期:2009-12-15 发布日期:2010-12-29
  • 通讯作者: 卢 剑 E-mail:lujian_hzp@yahoo.cn
  • 基金资助:

    国家质量技术监督检验检疫总局科研项目(2005QK122)

Use of Dual-column Gas Chromatography for The Determination of Organochlorine and Pyrethroid Pesticides Residues in Tea

LU Jian,WU Zhong-ping,GAO Wei,YU You-fen   

  1. Jiangsu Provincial Supervising and Testing Research Institute for Products Quality, Nanjing 210029, China
  • Received:2009-09-16 Online:2009-12-15 Published:2010-12-29
  • Contact: LU Jian E-mail:lujian_hzp@yahoo.cn

摘要:

采用气相色谱双柱法对茶叶中多种有机氯和拟除虫菊酯类农药残留量进行测定。样品用乙腈提取后,经Florisil 固相萃取小柱净化,用DB-1701 和DB-35ms 毛细管气相色谱柱、微电子捕获检测器,对茶叶中多种有机氯和拟除虫菊酯类农药残留量的测定可取得满意的结果。该方法样品平均加标回收率为72.02%~119.23%,相对标准偏差为0.19%~9.56%;茶叶中有机氯和拟除虫菊酯类农药(除三唑醇、粉唑醇外)多残留检出限为0.4~40μg/kg。

关键词: 茶叶, 有机氯和拟除虫菊酯类农药, 多残留量, 气相色谱双柱法, 微电子捕获检测器

Abstract:

A dual column gas chromatography method for determination of organochlorine and pyrethroid pesticides residues in tea was developed. The samples were extracted with acetonitrile. The extracts were purified using florisil SPE column, and then separated with DB-1701 and DB-35ms capillary columns, followed by detection with μECD. The average recoveries between 72.02% and 119.23%, relative standard deviations between 0.19% and 9.56% were obtained for spiked samples. The detection limits were 0.4~40μg/kg(except triadimenol and flutriafol).

Key words: tea, organochlorine and pyrethroid pesticides, multi residues, dual-column gas chromatography, μECD

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