Ion Exchange Chromatography-Indirect Ultraviolet Detection for Separation and Determination of Morpholinium Ionic Liquid Cations

摘要: A rapid analytical method of ion exchange chromatography with indirect ultraviolet detection was developed to determine morpholinium ionic liquid (IL) cations, i.e. N-methyl-N-ethyl cation ([MEMo]+) and N-methyl-N-propyl ([MPMo]+). Chromatographic separation cations performed on a sulfonic acid base column using imidazolium liquid-organic solvent as mobile phase. The effects chromatographic columns, absorption reagents, ILs, wavelength, organic solvents, pH values the phase temperature retention were investigated. times clearly decreased by increase alkyl substituent length or concentration 1-ethyl-3-methyl tetrafluoroborate. molecular structure anion IL which has UV influence determination analytes. Under optimal conditions, limits (signal-to-noise ratio, S/N = 3) 0.29 0.44 mg L-1 been successfully applied two ILs synthesized chemistry laboratory. uses system, is widely available in general laboratories, simple composition phase, thus make quantitative analysis no possible.