title: Simultaneous separation of common mono- and divalent cations on silica gels modified with aluminium and zirconium
creator: Ohta, K
creator: Tanaka, K
creator: Haddad, PR
subject: 250000 Chemical Sciences
subject: 250401 Separation Science
subject: 250400 Analytical Chemistry
description: 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.
date: 2001-06
type: Article
type: PeerReviewed
format: application/pdf
identifier: http://eprints.utas.edu.au/6421/1/261.pdf
relation: http://dx.doi.org/10.1016/S0165-9936(01)00074-7
identifier: 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
relation: http://eprints.utas.edu.au/6421/