Simultaneous separation of common mono- and divalent cations on silica gels modified with aluminium and zirconium |
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| Institution: | 1. The United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan;2. Institute of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo 183-8509, Japan;3. Department of Chemical Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan;4. Faculty of Agriculture, Utsunomiya University, 350 Mine-machi, Utsunomiya, Tochigi 321-8505, Japan;1. Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via G. Campi 183, 41125 Modena, Italy;2. Institute of Organic Synthesis and Photoreactivity (ISOF), National Research Council of Italy (CNR), via Gobetti 101, 40129 Bologna, Italy;1. State Key Laboratory of Food Additive and Condiment Testing, Zhenjiang Entry-exit Inspection Quarantine Bureau, Zhenjiang 212008, China;2. Research Institute of Lanzhou Petrochemical Corporation, Lanzhou 730060, China;3. Animal, Plant and Food Inspection Center, Jiangsu Entry-exit Inspection Quarantine Bureau, Nanjing 210001, China;4. Key Laboratory of Energy and Chemical Engineering, Ningxia University, Yinchuan 750021, China;1. Graduate School of Environmental Studies, Nagoya University, Chikusa, Nagoya 464-8601, Japan;2. Kansai Research Center, Forestry and Forest Products Research Institute, Kyoto 612-0855, Japan;3. Faculty of Science, Shinshu University, Matsumoto 390-8621, Japan;1. School of Chemistry, The University of Melbourne, Parkville, VIC 3010, Australia;2. UCIBIO/REQUIMTE, Department of Chemistry, Faculty of Pharmacy, University of Porto, R Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal |
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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. |
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