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A pulsed tunable dye laser has been used to obtain the emission spectra and fluorescence decay curves of solid UO2+2-Datura innoxia and a series of UO2+2-containing complexes at liquid nitrogen temperature. The decay curves of UO2+2-Datura
exhibited a bi-exponential decay, suggesting that at least two different binding sites are present on the walls of nonliving D. innoxia cells. The model solutions containing carboxyl, amine, hydroxyl, phosphoryl, sulfate, and sulfonate functionalities have been utilized to identify
the functionalities involving in the binding of UO2+2 to nonliving D. innoxia cell walls. Phosphoryl and dicarboxyl groups have beer demonstrated to be the dominant functional groups responsible for the binding of uranyl ions on D. innoxia cell walls.
Department of Chemistry, New Mexico State University, Las Cruces, New Mexico 88003
Publication date: July 1, 1992
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The Society publishes the internationally recognized, peer reviewed journal, Applied Spectroscopy, which is available both in print and online. Subscriptions are included with membership or can be purchased by institutional or corporate organizations. Abstracts may be viewed free of charge. Previously published as Bulletin (Society for Applied Spectroscopy)