TRLFS Study on Eu(III) Carbonate Complexation under Aerobic Conditions

Speciation is essential to obtain the thermodynamic data which are used for the nuclear repository safety assessment. Time-resolved laser fluorescence spectroscopy (TRLFS) is one of the most established tools for speciation of lanthanides and actinides especially in aqueous solution. There are a few thermodynamic data on europium carbonate in aqueous solution. Europium carbonate solid state study gives comparable information about europium speciation in aqueous solution. In this study, pH of prepared solutions was titrated under normal atmospheric condition. Fluorescence lifetime of the Eu(III) carbonate complex was measured by TRLFS