Energy transfer between 1,3-dimethylxanthine and europium(III) in aqueous solution |
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Authors: | LM Perry JD Winefordner |
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Institution: | Department of Chemistry, University of Florida, Gainesville, FL 32611 U.S.A. |
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Abstract: | Luminescence of 1,3-dimethylxanthine in solution is impaired owing to collisional deactivation by solvent molecules and matrix interferences. Energy absorbed by 1,3-dimethylxanthine has been transferred to trivalent europium which emits narrow-band radiation in a region distant from background interferences. The enhanced luminescence of trivalent europium was utilized for the determination of 1,3-dimethylxanthine in buffered aqueous solution. An analytically useful range from 1.1 × 10?5?5.0 × 10?4 M and a detection limit of 1.1 × 10?5 M were obtained. The methodology for the analytical procedure was determined. |
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Keywords: | Dimethylxanthine Europium(III) |
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