Application of headspace liquid-phase microextraction to the analysis of volatile halocarbons in water

被引：19

作者：

Zhang, Taozhi ^{[1
]}

Chen, Xinmiao ^{[1
]}

Li, Yalan ^{[1
]}

Liang, Pei ^{[1
]}

机构：

[1] Cent China Normal Univ, Key Lab Pesticide & Chem Biol, Minist Educ, Wuhan 430079, Hubei, Peoples R China

来源：

CHROMATOGRAPHIA | 2006年 / 63卷 / 11-12期

关键词：

gas chromatography-micro electron capture detector; headspace liquid-phase microextraction; volatile halocarbons;

D O I：

10.1365/s10337-006-0823-9

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

The determination of four volatile halocarbons (CHCl3, CCl4, C2HCl3 and C2Cl4) in water by headspace liquid-phase microextraction (HS-LPME) with gas chromatography using a micro electron capture detector (GC-mu ECD) is described. The effects of the type and volume of the extraction solvent, headspace volume, stirring rate, extraction temperature and time and ionic strength on the extraction performance are investigated and optimized. The developed protocol yields a linear calibration curve in the concentration range from 0.05 to 50 mu q L-1 for the target analytes; the detection limits ranged from 0.003 to 0.146 mu g L-1 and the relative standard deviation (R.S.D.) values below 8.45%. The results demonstrate that HS-LPME followed with GC-mu ECD is a simple and reliable technique for the determination of volatile halocarbons in water samples.

引用

页码：633 / 637

页数：5

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