@article{epprod6421,
          volume = {20},
          number = {6-7},
           month = {June},
          author = {K Ohta and K Tanaka and PR Haddad},
            note = {The definitive version is available online at http://www.sciencedirect.com/},
           title = {Simultaneous separation of common mono- and divalent cations on silica gels modified with aluminium and zirconium},
            year = {2001},
         journal = {TrAC - Trends in Analytical Chemistry},
           pages = {330--335},
        keywords = {Silica; Aluminium; Zirconium; Cation-exchange chromatography; Ion-exclusion chromatography},
             url = {http://eprints.utas.edu.au/6421/},
        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.}
}