Evaluation of Retention Factors for Nine Solutes with Ionic Liquid Additives via Linear Solvation Energy Relationships

Chemical Research in Chinese Universities ›› 2010, Vol. 26 ›› Issue (4): 532-536.

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Evaluation of Retention Factors for Nine Solutes with Ionic Liquid Additives via Linear Solvation Energy Relationships

ZHU Tao, TIAN Ming-lei and ROW Kyung-Ho*

Department of Chemical Engineering, Inha University, Nam-Ku, Incheon 402-751, Korea

Received:2009-10-06 Revised:2010-03-29 Online:2010-07-25 Published:2010-10-01
Contact: ROW Kyung-Ho
Supported by:
Supported by the Basic Science Research Program Through the National Research Foundation(NRF) of Korea Funded by the Ministry of Education, Science and Technology(No.2010-0015731).

Abstract

Abstract: A linear solvation energy relationships(LSERs) model was used to examine the fundamental chemical interactions governing the retention of 9 organic compounds on a C₁₈ column by means of reversed-phase high performance liquid chromatography(RP-HPLC). Three ionic liquids, 1-hexyl-3-methylimidazolium tetrafluoroborate ([Hmin][BF₄]), 1-butyl-3-methylimidazolium tetrafluoroborate([Bmin][BF₄]) and 1-octyl-3-methylimidazolium tetrafluoroborate([OMIm][BF₄]) as additives, were added to a methanol-water mobile phase. The effects of these three ionic liquids additives on the retention of nine organic compounds were investigated, and a comparison between the predicted and experimental retention factors was made via the LSERs model, which indicated that the LSERs model could be used to reproduce the experimental retention factors of the solutes under different mobile phase conditions. It is also a useful tool for modeling the interactions of the solutes between the stationary and mobile phases and evaluating the retention characteristics of HPLC.

Key words: Retention factor, Ionic liquid, Additive, Mobile phase, Model

ZHU Tao, TIAN Ming-lei and ROW Kyung-Ho*. Evaluation of Retention Factors for Nine Solutes with Ionic Liquid Additives via Linear Solvation Energy Relationships[J]. Chemical Research in Chinese Universities, 2010, 26(4): 532-536.

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Evaluation of Retention Factors for Nine Solutes with Ionic Liquid Additives via Linear Solvation Energy Relationships

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