Sorption of caffeine and theophylline on hypercrosslinked polystyrene |
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| Authors: | E. Yu. Andreeva S. G. Dmitrienko Yu. A. Zolotov |
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| Affiliation: | 1.Department of Chemistry,Moscow State University,Moscow,Russia |
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| Abstract: | The sorption of caffeine and theophylline from water solutions on hypercrosslinked polystyrene MN-200 was studied. It is shown that sorption is described by the Langmuir equation. The conditions of the dynamic sorption concentration of caffeine and theophylline on a concentrating column and the conditions of its desorption were found. A procedure for spectrophotometric determination of caffeine and theophylline with a dynamic preconcentration is proposed. |
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