caa a22 4500 445803975 CHVBK 20180317145151.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10337-011-2141-0 doi (NATIONALLICENCE)springer-10.1007/s10337-011-2141-0 Rapid Determination of Trifluoromethanesulfonate and p -Toluenesulfonate by Ion-Pair Chromatography Using a Reversed-Phase Silica-Based Monolithic Column: Application to the Analysis of Ionic Liquids [Elektronische Daten] [Siwen Li, Hong Yu, Yajie Ma] A method of ion-pair chromatography was developed on a reversed-phase silica-based monolithic column for the fast and simultaneous determination of trifluoromethanesulfonate (CF3SO3 −) and p-toluenesulfonate (C7H7SO3 −). The analysis was performed using a mobile phase of tetrabutylammonium hydroxide+citric acid+acetonitrile on the Chromolith Speed ROD RP-18e column with direct conductivity detection. The effects of the eluent, column temperature and flow rate on the retention of the anions were investigated. The experimental phenomenon was discussed according to hydrophobic interaction and ion-exchange mechanism in the separation. The optimized chromatographic conditions were selected. The optimized eluent for the separation consisted of 0.2mmolL−1 tetrabutylammonium hydroxide+0.10mmolL−1 citric acid+9% acetonitrile (pH 5.5). The flow rate was set at 6.0mLmin−1. The column temperature was 25°C. Under the optimal conditions, the better separation of CF3SO3 − and C7H7SO3 − was achieved without any interference by other anions (Cl−, Br−, I−, NO3 −, SO4 2−, ClO3 −, BF4 − and PF6 −). The detection limit (S/N=3) was 0.28 and 0.71mgL−1 for CF3SO3 − and C7H7SO3 −, respectively. The method has been applied to the determination of CF3SO3 − and C7H7SO3 − in ionic liquids. The spiked recoveries of CF3SO3 − and C7H7SO3 − were 101.1 and 100.2%, respectively. Springer-Verlag, 2011 Ion-pair chromatography nationallicence Monolithic column nationallicence Trifluoromethanesulfonate nationallicence p -Toluenesulfonate nationallicence Ionic liquids nationallicence Conductivity detection nationallicence Li Siwen College of Chemistry and Chemical Engineering, Harbin Normal University, 150025, Harbin, People's Republic of China aut Yu Hong College of Chemistry and Chemical Engineering, Harbin Normal University, 150025, Harbin, People's Republic of China aut Ma Yajie College of Chemistry and Chemical Engineering, Harbin Normal University, 150025, Harbin, People's Republic of China aut Chromatographia Springer-Verlag 74/11-12(2011-12-01), 759-765 0009-5893 74:11-12<759 2011 74 10337 https://doi.org/10.1007/s10337-011-2141-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10337-011-2141-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Li Siwen College of Chemistry and Chemical Engineering, Harbin Normal University, 150025, Harbin, People's Republic of China aut NATIONALLICENCE 700 1- Yu Hong College of Chemistry and Chemical Engineering, Harbin Normal University, 150025, Harbin, People's Republic of China aut NATIONALLICENCE 700 1- Ma Yajie College of Chemistry and Chemical Engineering, Harbin Normal University, 150025, Harbin, People's Republic of China aut NATIONALLICENCE 773 0- Chromatographia Springer-Verlag 74/11-12(2011-12-01), 759-765 0009-5893 74:11-12<759 2011 74 10337 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer