Figure 1
From: Surface complexation model for strontium sorption to amorphous silica and goethite
Normalized EXAFS spectra and corresponding radial structural functions for strontium sorbed to amorphous silica and for Sr2+(aq), strontianite (SrCO3(s)), and a Ca/Sr zeolite models. Solid lines are the data and dashed lines are fits to the data. For all sorption samples collected at low temperature, there is only a single shell of oxygen backscatterers indicated by one peak in the radial structural functions compared to multiple peaks for the model compounds reflecting Sr-Sr, Sr-C and Sr-Si/Al backscatters.