Characterization and quantification of Sm(III)/ and Cm(III)/clay mineral outer-sphere species by TRLFS in D2O and EXAFS studies

► An/Ln:clay outer-sphere species characterized and quantified by spectroscopic methods. ► Spectroscopic results were confirmed by model calculations. ► Combination of different spectroscopic and theoretical methods provides an insight into the fundamental understanding of processes at the water/mineral interface.