Abstract
The complex formation of uranium(VI) with glycerol 1-phosphate was determined by potentiometric titration, and TRLFS spectroscopy. Two complexes with a metal-to-ligand stoichiometry of 1:1 and 1:2 were found by potentiometry in the pH range 3–8, and the stability constants were calculated for I=0.1 M (NaClO 4) and T=25 °C to be log β 11=6.23±0.09 for UO 2(C 3H 7O 3PO 3) and log β 12=10.22±0.13 for UO 2(C 3H 7O 3PO 3) 2 2− . The TRLFS spectra at pH=4 show an increase of the fluorescence intensity, connected with a red shift of the emission spectra. But contrary to the potentiometric measurements only the 1:1 complex UO 2(C 3H 7O 3PO 3) could be detected under the specific experimental conditions. The main fluorescence emission bands and the lifetime of this complex were determined. The complex stability constant at I=0.1 M (NaClO 4) and T=25 °C was calculated to be log β 11=6.15±0.05.
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