Gas chromatographic retention of alkyl phosphates on ionic liquid stationary phases |
| |
Authors: | Brandon M Weber James J Harynuk |
| |
Institution: | Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada T6C 2X4 |
| |
Abstract: | Retention behaviors of alkyl phosophates were studied on a series of ionic liquid gas chromatography columns. The selectivity of the IL columns for alkyl phosphates were compared with a 5% phenyl column as a route to evaluating the potential use of IL columns in the analysis of alkyl phosphates in petroleum samples in both one- and multi-dimensional GC. Most interestingly, we demonstrate for the first time the dependence of elution order on separation temperature for members of a homologous series of compounds. At low temperatures it was found that trihexyl phosphate eluted before trioctyl phosphate, while at higher temperatures this pattern was reversed. |
| |
Keywords: | Ionic liquid GC Gas chromatography Retention time prediction Alkyl phosphates |
本文献已被 ScienceDirect 等数据库收录! |