Determination of ethanol in ionic liquids using headspace solid-phase micro extraction-gas chromatography

被引：7

作者：

Zhao, Fei ^{[1
]}

Ponnaiyan, Thehazhnan K. ^{[2
]}

Graham, Christa M. ^{[1
]}

Schall, Constance A. ^{[2
]}

Varanasi, Sasidhar ^{[2
]}

Anderson, Jared L. ^{[1
]}

机构：

[1] Univ Toledo, Dept Chem, Toledo, OH 43606 USA

[2] Univ Toledo, Dept Chem & Environm Engn, Toledo, OH 43606 USA

来源：

ANALYTICAL AND BIOANALYTICAL CHEMISTRY | 2008年 / 392卷 / 7-8期

基金：

美国国家科学基金会;

关键词：

Ionic liquid; Room temperature ionic liquid; Ethanol; Gas chromatography; Solid-phase microextraction; Headspace extraction;

D O I：

10.1007/s00216-008-2398-9

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

The application of ionic liquids (ILs) as non-derivatizing solvents for the pretreatment and regeneration of cellulose is a growing area of research. Here we report the development of a rapid and simple method for the determination of residual ethanol content in two hydrophilic ILs, 1-butyl-3-methylimidazolium chloride and 1-ethyl-3methylimidazolium acetate. The method utilizes headspace solid-phase microextraction coupled with gas chromatography at elevated extraction temperatures, resulting in rapid equilibration times. The effect of IL water content on the ethanol extraction efficiency is presented. Recovery experiments carried out in real samples gave recoveries ranging from 96.8 to 98.2%.

引用

页码：1271 / 1275

页数：5

共 11 条

[1] Ionic liquids in analytical chemistry [J].