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Ion chromatographic behavior of alkali and alkaline earth metal cations on silica gel columns with cation exchange characteristics
journal contribution
posted on 2023-05-26, 16:25 authored by Ohta, K, Morikawa, H, Tanaka, K, Uryu, Y, Paull, B, Paul HaddadPaul HaddadIon chromatographic behavior of alkali metal cations and ammonium ion on various unmodified silica gel columns by elution with 2 mM nitric acid (pH 2.7) was investigated. As a result it was found that one silica gel (Develosil 30-5) column acted as a cation exchange column under acidic eluent conditions and an excellent separation of these cations was achieved. Therefore, in order to produce silica gel, which acts as a cation exchanger for ion chromatography under strongly acidic conditions, the main cause of the cation exchange characteristics of the Develosil 30-5 silica gel was investigated. As a result it was found that the main cause could be attributed to aluminium present as an impurity in the silica gel. This finding suggests that the modification of silica gel with aluminium is very useful for the production of new advanced silica-based cation exchangers for ion chromatography.
History
Publication title
Analytica Chimica ActaVolume
359Article number
3Number
3Pagination
255-261ISSN
0003-2670Publication status
- Published
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The definitive version is available at http://www.sciencedirect.comRepository Status
- Restricted
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