色谱

色谱 ›› 2014, Vol. 32 ›› Issue (8): 837-842.DOI: 10.3724/SP.J.1123.2014.04035

• 研究论文 • 上一篇    下一篇

膜萃取-气相色谱/微分离子迁移谱检测水中的1,4-二恶烷

梁茜茜1,2, 陈创1, 王卫国1, 李海洋1   

  1. 1. 中国科学院大连化学物理研究所, 辽宁 大连 116023;
    2. 大连大学, 辽宁 大连 116622
  • 收稿日期:2014-04-23 修回日期:2014-06-09 出版日期:2014-08-08 发布日期:2014-08-01
  • 通讯作者: 李海洋，E-mail：hli@dicp.ac.cn
  • 基金资助:

    国家重大科学仪器设备开发专项（2013YQ09070302）；国家自然科学基金项目（21177124，21077101）；国民核生化灾害防护国家重点实验室课题（SKLNBC2012-08K）.

Detection of 1,4-dioxane in water by membrane extraction-gas chromatography/differential mobility spectrometry

LIANG Xixi1,2, CHEN Chuang1, WANG Weiguo1, LI Haiyang1   

  1. 1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
    2. Dalian University, Dalian 116622, China
  • Received:2014-04-23 Revised:2014-06-09 Online:2014-08-08 Published:2014-08-01

PDF

305

被引次数

7

摘要：

利用膜萃取-气相色谱/微分离子迁移谱（ME-GC/DMS）对水中的1，4-二恶烷污染物进行了检测。考察了射频电压、采样流速、膜渗透时间、Trap预富集时间等参数对检测二恶烷的影响规律。结果显示：在优化条件下，二恶烷的定量线性范围为2.0~20.0 μg/L，检出限为0.67 μg/L。实验证明，二恶烷与5种氯代烃的混合物在ME-GC/DMS的二维分离谱图中得到特异性响应，增加了识别的准确性。该研究为发展现场实时监测地下水中污染物的方法提供了重要参考。

关键词: 1,4-二恶烷, 氯代烃, 膜萃取装置, 气相色谱/微分离子迁移谱, 水

Abstract:

The method of detecting trace 1,4-dioxane in water using membrane extraction coupled with gas chromatography/differential mobility spectrometry (GC/DMS) was developed. The parameters including radio frequency voltage, sampling flow rate, permeation time and trapping time were optimized to 1000 V, 50 mL/min, 30 min and 150 s, respectively. The linear range for dioxane was obtained from 2.0 μg/L to 20.0 μg/L. The LOD was found to be 0.67 μg/L. The specificity towards 1,4-dioxane in the presence of five chlorinated hydrocarbons was improved by using two-dimensional GC separation with optimized DMS compensation voltage. This method paves a way for developing field-deployable sensors for real-time monitoring contaminants in groundwater.

Key words: 1,4-dioxane, chlorinated hydrocarbons, gas chromatography/differential mobility spectrometry (GC/DMS), membrane extraction device, water

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