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Retention behavior of alkali, alkaline earth and transition metal cations in ion chromatography with an unmodified silica gel column

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Ohta, K and Tanaka, K and Paull, B and Haddad, PR (1997) Retention behavior of alkali, alkaline earth and transition metal cations in ion chromatography with an unmodified silica gel column. Journal of Chromatography A, 770 (1-2). pp. 219-227. ISSN 0021-9673

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Abstract

An 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.

Item Type: Article
Keywords: Mobile phase composition; Metal cations
Journal or Publication Title: Journal of Chromatography A
Page Range: pp. 219-227
ISSN: 0021-9673
Identification Number - DOI: 10.1016/S0021-9673(96)01024-2
Additional Information: The definitive version is available at http://www.sciencedirect.com
Date Deposited: 19 Nov 2008 00:30
Last Modified: 18 Nov 2014 03:53
URI: http://eprints.utas.edu.au/id/eprint/8029
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