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Retention behaviour of alkali, alkaline earth and transition metal cations by ion chromatography with an unmodified silica gel column
journal contribution
posted on 2023-05-16, 10:58 authored by Ohta, K, Tanaka, K, Brett PaullBrett Paull, Paul HaddadPaul HaddadAn unmodified silica gel (Develosil 30-5) column (150×4.6 mm I.D.) has been applied to the ion chromatographic separation of alkali, alkaline earth and transition metal cations. The retention behavior of the above cations on the bare substrate was investigated using a number of weak inorganic and organic acid eluents. During this investigation, several separations were achieved and the most suitable eluent conditions were identified. It was concluded that: (a) 1.5 mM HNO3-0.5mM pyridine-2,6-dicarboxylic acid eluent was the most effective for the simultaneous separation of common alkali and alkaline earth metal cations, (b) 1.5 mM oxalic acid eluent resulted in the best separation of alkali, alkaline earth, and transition metal cations, (c) 0.5 mM CuSO4 eluent could be used for the separation of alkali metal cations alone and (d) 0.5 mM ethylenediamine-oxalic acid eluent at pH 5.5 resulted in themost efficient separation of both alkaline earth and transition metal cations.
History
Publication title
Journal of Chromatography AVolume
770Issue
1-2Pagination
219-227ISSN
0021-9673Department/School
School of Natural SciencesPublisher
ElsevierPlace of publication
The NetherlandsRights statement
The definitive version is available at http://www.sciencedirect.comRepository Status
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