食品科学

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顶空固相微萃取与气相色谱-电子捕获技术联用检测软木塞中2,4,6-三氯苯甲醚

张哲琦1,王玉春2,陈 臣1,李 艳1,3,*   

  1. 1.河北科技大学生物科学与工程学院,河北 石家庄 050018;
    2.河北省分析测试研究中心,河北 石家庄 050018;3.河北省发酵工程技术研究中心,河北 石家庄 050018
  • 出版日期:2014-06-25 发布日期:2014-07-03
  • 通讯作者: 李 艳 E-mail:lymdh5885@163.com
  • 基金资助:

    河北省科技支撑计划项目(13397107D);河北科技大学2012年度大学生科技创新基金立项项目(2012-3)

Determination of 2,4,6-Trichloroanisole in Corks by Headspace Solid-Phase Microextraction and Gas Chromatography-Electron-Capture Detection

ZHANG Zhe-qi1, WANG Yu-chu2, CHEN Chen1, LI Yan1,3,*   

  1. 1. College of Bioscience and Bioengineering, Hebei University of Science and Technology, Shijiazhuang 050018, China;
    2. Hebei Research Center of Analysis and Testing, Shijiazhuang 050018, China;
    3. R & D Center for Fermentation Engineering of Hebei Province, Shijiazhuang 050018, China
  • Online:2014-06-25 Published:2014-07-03
  • Contact: LI Yan E-mail:lymdh5885@163.com

摘要:

建立利用顶空固相微萃取与气相色谱电子捕获技术联用分析检测葡萄酒软木塞中2,4,6-三氯苯甲醚含量的方法。该方法测定软木塞中2,4,6-三氯苯甲醚的相关系数(R²)为0.999 9,精密度好(相对标准偏差不大于5.6%),回收率为101%~108%,检出限为0.20 pg/L、定量限为0.66 pg/L。利用该方法测定了11 种不同类型的软木塞中2,4,6-三氯苯甲醚的含量,证实了所建方法适用于葡萄酒软木塞中痕量2,4,6-三氯苯甲醚含量的测定。

关键词: 顶空固相微萃取, 气相色谱电子捕获联用技术, 葡萄酒软木塞, 2, 4, 6-三氯苯甲醚

Abstract:

A method for determining 2,4,6-trichloroanisole (TCA) in wine corks has been presented by using headspace
solid-phase microextraction (HS-SPME) and gas chromatography with electron-capture detection (GC-ECD). The
correlation coefficient for linearity (R2), limit of detection (LOD) and limit of quanti?cation (LOQ) of this method were
0.999 9, 0.20 pg/L, and 0.66 pg/L, respectively. The precision expressed as relative standard deviation (RSD) was below
5.6% and recoveries ranged from 101% to 108%. The levels of TCA in 11 different kinds of corks were determined by this
method. The results indicated that this method is suitable for the determination of trace levels of TCA in wine corks.

Key words: HS-SPME, GC-ECD, cork, 2,4,6-trichloroanisole (TCA)

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