Evaluation of thermodynamic data of aqueous species and compounds for strontium and radium

Yoshida, Yasushi*; Kitamura, Akira  

Reliable thermodynamic data of strontium and radium are required for performance assessment of geological disposal system. Strontium is one of the important elements for performance assessment of geological disposal of TRU waste. Radium is an important element in HLW disposal system as a daughter of actinides. Review of thermodynamic data of strontium and radium obtained from literature survey has been performed, and those of hydrolysis species, sulfate complexes, carbonates and sulfates have been selected.