Hydrophilic interaction liquid chromatography for separation and quantification of selected room-temperature ionic liquids
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- 作者：Guillaume Le Rouzo ; Christine Lamouroux ; Carole Bresson ; Aline Guichard ; Philippe Moisy ; Gilles Moutiers
- 关键词：Room-temperature ionic liquids ; Hydrophilic interaction liquid chromatography ; Ionic liquid cations ; Ion-pairing reversed-phase chromatography
- 刊名：Journal of Chromatography A
- 出版年：2007
- 出版时间：14 September 2007
- 年：2007
- 卷：1164
- 期：1-2
- 页码：139-144
- 全文大小：393 K
文摘
Hydrophilic interaction liquid chromatography (HILIC) is an alternative technique to ion pairing-reversed-phase liquid chromatography (IP-RPLC) and classical RPLC for separation of alkylimidazolium room-temperature ionic liquids (RTILs). Particularly, HILIC offers better retention and selectivity for short-chains RTILs imidazolium compounds. HILIC mechanisms were investigated by studying the influence of organic modifier content and salt concentration in the mobile phase. HILIC method was validated by quantifying 1-butyl-3-methylimidazolium cation (BMIM) degradation under gamma radiation at 2.5 MGy. Development of separative reproducible analytical methods, including for low concentration, applicable to RTILs are today mandatory to improve RTILs chemistry.