Characterization of Phosphonium Ionic Liquids with Emphasis on Mass Spectrometry and Chromatography

摘要

An LC/MS procedure is established for phosphonium ILs. This procedure is also applicable for imidazolium ILs. The sensitivity of the procedure is rn0.1 ppm or better. In mass spec analysis, higher concentration samples of ILs produce cluster ions. These cluster ions can be used to identify the anion portion of the IL. IC is a suitable technique for the analysis of residual chloride with 0.1ppm sensitivity.