caa a22 4500 445801107 CHVBK 20180317145141.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10337-010-1866-5 doi (NATIONALLICENCE)springer-10.1007/s10337-010-1866-5 Determination of Pyridinium Ionic Liquid Cations by Reversed Phase Ion-Pair Chromatography Using Gradient Elution [Elektronische Daten] [Lingmin Meng, Hong Yu, Yuzhen Liu] Four pyridinium ionic liquid cations (N-ethyl-pyridinium, N-butyl-pyridinium, N-butyl-4-methyl-pyridinium, N-hexyl-pyridinium) were separated and determined by reversed phase ion-pair chromatography with ultraviolet-visible detection. The effects of ion-pair reagent, acetonitrile concentration and column temperature on the retention and separation of the cations were evaluated. Then the four pyridinium cations could be separated at baseline within 13min. The detection limits (S/N=3) were 0.30-0.70mgL−1, and relative standard deviations (n=5) for peak areas were 0.18-0.58%. The method was applied to analyze surface water with recoveries of 99.5-104.0%, which is accurate, reliable and practical. Springer-Verlag, 2011 Ion-pair chromatography nationallicence Ionic liquids nationallicence Gradient elution nationallicence Ultraviolet-visible detection nationallicence Pyridinium cations nationallicence Meng Lingmin 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 Liu Yuzhen College of Chemistry and Chemical Engineering, Harbin Normal University, 150025, Harbin, People's Republic of China aut Chromatographia Vieweg Verlag 73/3-4(2011-02-01), 367-371 0009-5893 73:3-4<367 2011 73 10337 https://doi.org/10.1007/s10337-010-1866-5 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10337-010-1866-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Meng Lingmin 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- Liu Yuzhen College of Chemistry and Chemical Engineering, Harbin Normal University, 150025, Harbin, People's Republic of China aut NATIONALLICENCE 773 0- Chromatographia Vieweg Verlag 73/3-4(2011-02-01), 367-371 0009-5893 73:3-4<367 2011 73 10337 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer