Determination of ethanol in ionic liquids using headspace solid-phase microextraction-gas chromatography
作者： Fei Zhao , Thehazhnan K. Ponnaiyan , Christa M. Graham , Constance A. Schall , Sasidhar Varanasi
DOI: 10.1007/S00216-008-2398-9
关键词:
摘要: The application of ionic liquids (ILs) as nonderivatizing solvents for the pretreatment and regeneration cellulose is a growing area research. Here we report development rapid simple method determination residual ethanol content in two hydrophilic ILs, 1-butyl-3-methylimidazolium chloride 1-ethyl-3-methylimidazolium acetate. utilizes headspace solid-phase microextraction coupled with gas chromatography at elevated extraction temperatures, resulting equilibration times. effect IL water on efficiency presented. Recovery experiments carried out real samples gave recoveries ranging from 96.8 to 98.2%.
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