Syntheses and spectroscopic characterization of uranium(VI) silicate minerals |
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Authors: | S Lehmann G Geipel H Foerstendorf G Bernhard |
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Institution: | (1) Forschungszentrum Dresden-Rossendorf, Institute of Radiochemistry, P.O. Box 51 01 19, D-01314 Dresden, Germany |
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Abstract: | In this study, the secondary uranium(VI) silicate minerals boltwoodite, sodium boltwoodite and uranophane were synthesized.
Sodium boltwoodite was successfully obtained by the following new reaction procedure. Their analytical characterization was
carried out by means of inductively coupled plasma mass spectrometry and atomic absorption spectroscopy, scanning electron
microscopy, X-ray powder diffraction, differential thermal analysis combined with thermogravimetry and infrared spectroscopy.
Furthermore, the fluorescence behaviour was measured using time-resolved laser fluorescence spectroscopy. Herewith, the fluorescence
properties of the three silicious uranyl phases were determined at room temperature. |
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Keywords: | |
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