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Simultaneous determination of common mono- and divalent cations by ion chromatography with an unmodified silica gel column
journal contribution
posted on 2023-05-16, 10:20 authored by Ohta, K, Sando, M, Tanaka, K, Paul HaddadPaul HaddadIn order to characterize the cation-exchange properties of a silica gel column in the acidic region, the retention behavior of common mono- and divalent cations (Na+, NH4+, K+, Mg2+ and Ca2+) was investigated. When using 5 mM nitric acid (pH 2.3) as an eluent, these cations were retained on a silica gel column (150×4.6 mm I.D.) packed with Develosil 30-5 unmodified silica gel that has a very large surface area (ca. 770 m2/g), showing that such a stationary phase could be used as a cation-exchanger for ion chromatography with acidic eluents. When using 1.5 mM 2,6-pyridinedicarboxylic acid as an eluent, a good separation of these cations was obtained in 12 min using conductimetric detection. This separation was applied successfully to the simultaneous determination of the five cations in various environmental water samples.
History
Publication title
Journal of Chromatography AVolume
752Issue
1-2Pagination
167-172ISSN
0021-9673Department/School
School of Natural SciencesPublisher
Elsevier Science BvPlace of publication
The NetherlandsRights statement
The definitive version is available at http://www.sciencedirect.comRepository Status
- Restricted