Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf

A cryogenic time resolved laser induced fluorescence spectroscopy (cryo-TRLFS) was successfully used to identify uranium binding forms in some German mineral waters of exceptionally low concentrations (<3.0 µg/ L). The measurements were performed at 153 K. The spectroscopic data showed a prevalence of aquatic species Ca2UO2(CO3)3 in most of the waters, while UO2(CO3)34- dominates only in a very few samples. The influence of the pH and main water constituents on uranium speciation was discussed. Spectroscopy indicated a good agreement with the modelling results.