食品科学 ›› 2009, Vol. 30 ›› Issue (20 ): 288-290.doi: 10.7506/spkx1002-6300-200920062

• 分析检测 • 上一篇    下一篇

气相色谱-质谱联用技术测定进出口食品中氟烯草酸残留

高文惠1,郭春海2   

  1. 1.河北科技大学生物科学与工程学院 2.河北出入境检验检疫局
  • 收稿日期:2009-06-20 出版日期:2009-10-15 发布日期:2010-12-29
  • 通讯作者: 高文惠
  • 基金资助:

    河北省博士基金项目(06547003D-3);河北省教育厅课题(Z2005202);河北科技大学杰出青年基金项目(2006JC-14)

GC-MS Determination of Flumiclorac-pentyl Residues in Import and Export Foods

GAO Wen-hui1,GUO Chun-hai2   

  1. 1. College of Biological Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China;
    2. Hebei Entry and Exit Inspection and Quarantine Bureau, Shijiazhuang 050071, China
  • Received:2009-06-20 Online:2009-10-15 Published:2010-12-29
  • Contact: GAO Wen-hui

摘要:

建立了一种气相色谱-质谱联用技术检测进出口食品中氟烯草酸类除草剂残留的方法。采用乙酸乙酯提取样品中的氟烯草酸,凝胶渗透色谱(GPC)净化,气相色谱-质谱联用仪测定,外标法定量。结果表明,本方法的线性浓度范围为0.05~1μg/ml,线性相关系数为0.9983,平均回收率在70.35%~95.24%之间,相对标准偏差在3.22%~6.69%之间,说明方法的可靠性和精密度良好,并且该方法的定量限为5μg/kg,完全可以达到日本肯定列表的检测要求。

关键词: 氟烯草酸, 残留, 凝胶渗透色谱法, 气相色谱-质谱联用法

Abstract:

A GC-MS method, based on a sequential procedure of extraction of flumiclorac-pentyl residues in samples with ethyl acetate, clean-up by gel permeation chromatography (GPC), GC-MS analysis and quantitative determination by external standard method, was presented for the determination of flumiclorac-pentyl residues in import and export foods. The analytical method revealed a quantification limit of 5 μg/kg and a linear range of 0.05- 1 μg/ml with the linear correlation coefficient of 0.9983. The average spike recoveries at two levels of 5.0 and 50μg/g were in the range of 70.35%-95.24%, with a relative standard deviation (RSD) of 3.22%-6.69%. This method can meet the requirements of Japanese Positive List System qualification due to its excellent figures of merit.

Key words: flumiclorac-pentyl, residue, gel permeation chromatography, GC-MS

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