期刊
JOURNAL OF LIQUID CHROMATOGRAPHY & RELATED TECHNOLOGIES
卷 37, 期 1, 页码 73-87出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/10826076.2012.734000
关键词
imidazolium cations; ion-pair chromatography; ionic liquids; monolithic column; ultraviolet detection
资金
- Natural Science Foundation of Heilongjiang Province [B200909]
- Program for Scientific and Technological Innovation Team Construction in Universities of Heilongjiang Province [2011TD010]
A fast and gradient ion-pair chromatographic method was developed for determination of five homologue imidazolium ionic liquid cations using a silica-based monolithic column and ultraviolet detection. Chromatographic separations were performed on a Chromolith Speed ROD RP-18e column with 1-heptanesulfonic acid sodium aqueous solution (pH adjusted by citric acid)-acetonitrile as the mobile phase. The effects of chromatographic column, mobile phase, flow rate, and column temperature on retention and separation of the cations were investigated. The retention rules of homologue imidazolium cations were discussed. The results showed that the analysis time could be significantly reduced owing to the application of monolithic column. Simultaneous and fast separation of five imidazolium cations was achieved under the optimum chromatographic conditions. Detection limits (S/N=3) for the cations were 0.26-1.61mg/L. Relative standard deviations (n=5) for peak areas and retention times were less than 0.8%. The method has been successfully applied to the determination of two ionic liquids synthesized by chemistry lab. Recoveries of the cations after spiking were 96.8-101.9%.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据