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Simultaneous separation of common mono- and divalent cations on silica gels modified with aluminium and zirconium

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Ohta, K and Tanaka, K and Haddad, PR (2001) Simultaneous separation of common mono- and divalent cations on silica gels modified with aluminium and zirconium. TrAC - Trends in Analytical Chemistry, 20 (6-7). pp. 330-335. ISSN 0167-2940

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Abstract

The modification of silica gel with aluminium and zirconium can be used for the preparation of advanced silica-based cation-exchange stationary phases for use in ion chromatography with conductimetric detection (IC-CD) for cations. Silica gels modified with aluminium (Al-silica) and zirconium (Zr-silica) act as cation-exchangers under strongly acidic conditions. Highly sensitive indirect conductimetric detection and excellently simultaneous separation for common mono- and divalent cations (Li+, Na+, NH4+, K+, Mg2+ and Ca2+) can be achieved on the Al-silica and Zr-silica columns in IC-CD by using acidic eluents containing 15-crown-5 (1,3,7,10,13-pentaoxacyclopentadecane). The Al-silica and Zr-silica can also be applied successfully as cation-exchange stationary phases in ion-exclusion chromatography for the separation of various aliphatic and benzenecarboxylic acids.

Item Type: Article
Keywords: Silica; Aluminium; Zirconium; Cation-exchange chromatography; Ion-exclusion chromatography
Journal or Publication Title: TrAC - Trends in Analytical Chemistry
Page Range: pp. 330-335
ISSN: 0167-2940
Identification Number - DOI: 10.1016/S0165-9936(01)00074-7
Additional Information: The definitive version is available online at http://www.sciencedirect.com/
Date Deposited: 19 May 2008 12:15
Last Modified: 18 Nov 2014 03:40
URI: http://eprints.utas.edu.au/id/eprint/6421
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