食品科学 ›› 2009, Vol. 30 ›› Issue (8): 227-230.doi: 10.7506/spkx1002-6630-200908050

• 分析检测 • 上一篇    下一篇

基质固相分散-气相色谱法测定胡萝卜中百菌清和拟除虫菊酯类农药

董 娟1,罗小玲2,*,唐宗贵2,鲁立良2,王庆玲1,李英娇1   

  1. 1.石河子大学食品学院 2.新疆农垦科学院检测中心
  • 收稿日期:2008-06-11 修回日期:2008-12-06 出版日期:2009-04-15 发布日期:2010-12-29
  • 通讯作者: 罗小玲2,*, E-mail:lxl62_622@126.com

Determination of Chlorothalonil and Pyrethroid Pesticides in Carrot by Capillary Gas Chromatography Coupled with Matrix Solid-phase Dispersion

DONG Juan1 LUO Xiao-ling2,* TANG Zong-gui2 LU Li-liang2 WANG Qing-ling1 LI Ying-jiao1   

  1. (1. College of Food, Shihezi University, Shihezi 832000, China
    2. Testing Center, Xinjiang Academy of Land Reclamation Scieces, Shihezi 832000, China)
  • Received:2008-06-11 Revised:2008-12-06 Online:2009-04-15 Published:2010-12-29
  • Contact: LUO Xiao-ling2,* E-mail:lxl62_622@126.com

摘要:

建立了毛细管气相色谱法同时分析胡萝卜中百菌清和5种拟除虫菊酯类农药的方法。样品以乙酸乙酯为洗脱剂经基质固相分散(matrix solid-phase dispersion,MSPD)提取和净化,DB-5毛细管柱分离,采用GC-μECD分析、外标法定量。样品加标回收率为80.5%~107.6%,相对标准偏差小于7%,方法检出限为0.003~0.006mg/kg。该方法简便、快速、灵敏、准确,符合蔬菜中百菌清和拟除虫菊酯类农药检测的要求。

关键词: 基质固相分散(MSPD), 胡萝卜, 百菌清, 拟除虫菊酯类农药, 气相色谱

Abstract:

A capillary gas chromatography (CGC) was developed for the determination of chlorothalonil and five pyrethroids in carrot. The sample was extracted and purified by matrix solid-phase dispersion (MSPD) with ethyl acetate as the eluent, separated by DB-5 capillary vessel column, analyzed by GC- μECD, and quantified by external standard method. The results showed that the recovery of spiked sample is 80.5% to 107.6% with a relative standard deviation less than 7%, and the detection limit is 0.003 to 0.006 mg/kg. The method is simple, raid, sensitive, accurate and suitable for the detection of chlorothalonil and pyrethroid pesticides in vegetables.

Key words: carrot, chlorothalonil, pyrethroid pesticides, matrix solid-phase dispersion (MSPD), capillary gas chromatography (CGC)

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