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Non-suppressed ion chromatography of cations on silica gel modified with aluminium


Ohta, K and Morikawa, H and Tanaka, K and Haddad, PR, Non-suppressed ion chromatography of cations on silica gel modified with aluminium, Journal of Chromatography A, 804, (1-2) pp. 171-177. ISSN 0021-9673 (1998) [Refereed Article]

DOI: doi:10.1016/S0021-9673(97)01248-X


The presence of aluminium in the silica matrix causes an enhancement of the acidity of the silanol group on silica gel. Therefore, in order to prepare silica-based cation-exchangers for ion chromatography (IC) under strongly acidic eluent conditions, modification of silica gel with aluminium using a coating method was carried out. As a result, aluminium-adsorbing silica gels were found to act as a cation-exchangers under strongly acidic eluent conditions and were successfully applied to the conductimetric detection IC for the separation of common mono- and divalent cations using nitric acid-2,6-pyridinedicarboxylic acid eluent. These results strongly indicate that the modification is a simple and effective way for the preparation of advanced silica-based cation-exchangers for IC.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Analytical chemistry
Research Field:Instrumental methods (excl. immunological and bioassay methods)
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the chemical sciences
UTAS Author:Tanaka, K (Dr Kazuhiko Tanaka)
UTAS Author:Haddad, PR (Professor Paul Haddad)
ID Code:14151
Year Published:1998
Web of Science® Times Cited:15
Deposited By:Chemistry
Deposited On:1998-08-01
Last Modified:2011-08-09

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