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

doi:10.3724/SP.J.1123.2014.04035

Abstract

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

CLC Number:

O658

LIANG Xixi, CHEN Chuang, WANG Weiguo, LI Haiyang. Detection of 1,4-dioxane in water by membrane extraction-gas chromatography/differential mobility spectrometry[J]. Chinese Journal of Chromatography, 2014, 32(8): 837-842.

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