Journal
JOURNAL OF SEPARATION SCIENCE
Volume 31, Issue 15, Pages 2791-2796Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jssc.200800150
Keywords
cationic surfactants; coating; inorganic anions; ion chromatography; long-chain imidazolium ionic liquids
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Funding
- National Natural Science Foundation of China (NSFC) [20475058, 20533080]
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Separations of common inorganic anions were carried out on ODS columns coated with two long-chain alkylimidazolium ionic liquids ([C(12)MIm]Br and [C(14)MIm]Br) as new cationic surfactants for ion chromatography. With phthalate buffer Solution as the mobile phases and non-suppressed conductivity detection, high column efficiencies and excellent selectivity were obtained in the separation of inorganic anions. Chromatographic parameters are calculated and the results show that the coated column possesses significant potential for the analysis of some inorganic anions such as CH3COO-, IO3-, Cl-, BrO3, NO2-, Br-, NO3-, SO42-, I-, BF4-, and SCN-. The effect of eluent pH values on the separation of anions has been studied on the column coated with [C(12)MIm]Br. The stability of the coated columns was also examined.
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