Ion-exchange properties of hypercrosslinked polystyrene impregnated with methyl orange |
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| Authors: | Maria G. Kiseleva, Lubov&#x V. Radchenko,Pavel N. Nesterenko |
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| Affiliation: | Division of Analytical Chemistry, Lomonosov Moscow State University, Vorob’evy Gory GSP-3, Moscow 119899, Russian Federation |
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| Abstract: | A novel bipolar stationary phase (HCPS–MO) was prepared by impregnation of hypercrosslinked polystyrene (HCPS) with methyl orange (MO; 4-dimethylamino-4′-sulfoazobenzene) and its ion-exchange properties were studied. Simultaneous separation of cations and anions on HCPS–MO is possible, although it behaves preferentially as a cation-exchanger. Unusual selectivity of HCPS-MO for alkali and alkaline-earth metal cations: Na++K++4++ and Mg2+2+2+2+ was observed. The effect of temperature on retention of alkali and alkaline-earth metal cations was studied. Separation of Na+, K+, Rb+, NH4+, Cs+, Mg2+ and Ca2+ on HCPS–MO with diluted cerium(III) nitrate solution as an eluent in single run is presented. |
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| Keywords: | Alkali metals Alkaline–earth metals Metal cations Inorganic anions Inorganic cations |
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