Abstract
A study on the leucine-based ionic liquids as stationary phases in gas chromatography was presented. L-Leucine ethyl ester tetrafluoroborate and L-leucine ethyl ester bis [(trifluoromethyl) sulfonyl] imide were synthesized and used as stationary phases in gas chromatography. Meanwhile, Abraham solvation parameter models at 50, 80 and 110℃ were used to evaluate the solvation characteristics. Furthermore, the chromatographic separation performance was evaluated by a Grob test mixture and n-alkanes mixture. The present results demonstrate that the leucine-based ionic liquids stationary phases have good film-forming ability. The system constants indicated that the dipolarity/polarizability and the hydrogen-bond interaction play a major role among five molecular interactions between stationary phases and solute molecules. Leucine-based ionic liquids stationary phases possess excellent chromatographic separation performance, and may be applicable as valuable gas chromatography stationary phases.
| Original language | English |
|---|---|
| Pages (from-to) | 1090-1095 |
| Number of pages | 6 |
| Journal | Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology |
| Volume | 37 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 1 Oct 2017 |
Keywords
- Abraham solvation parameter model
- Gas chromatography
- Leucine-based ionic liquids
- Stationary phases