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Manipulation of separation selectivity of inorganic anions in electrostatic ion chromatography by the use of mixed cationic-zwitterionic micelles as the column coating solution
journal contribution
posted on 2023-05-16, 12:58 authored by Hu, W, Paul HaddadPaul Haddad, Cook, HA, Yamamoto, H, Hasebe, K, Tanaka, K, Fritz, JThis paper describes an electrostatic ion chromatographic system in which the separation selectivity for inorganic anions, especially for sulfate and phosphate, could be manipulated by altering the molar ratio of the zwitterionic and cationic surfactants in the column coating solution used to prepare the stationary phase. The zwitterionic surfactant used for this study was 3-(N,N-dimethyltetradecylammonio)propanesulfonate (Zwittergent-3-14) and the cationic surfactant was tetradecyltrimethylammonium (TTA). Using a reversed-phase C18 column (250×4.6 mm I.D.) coated with 10/10 (mM/mM) of TTA/Zwittergent-3-14 mixed micelles as the stationary phase and either NaHCO3 or Na2CO3 aqueous solution as the eluent, together with suppressed conductivity detection, baseline separation of seven model inorganic anions was obtained. The elution order for those anions was found to be F−
History
Publication title
Journal of Chromatography AVolume
920Issue
1-2Pagination
95-100ISSN
0021-9673Department/School
School of Natural SciencesPublisher
Elsevier Science BVPlace of publication
AmsterdamRights statement
The definitive version is available at http://www.sciencedirect.comRepository Status
- Restricted