Figure 3
From: Surface complexation model for strontium sorption to amorphous silica and goethite
Normalized EXAFS spectra and corresponding radial structural functions for strontium sorbed to goethite and for Sr2+(aq) and SrCO3(s) models (reproduced from Sahai et al., 2000). Solid lines are the data and dashed lines are fits to the data. At pH 8.5 multiple peaks in the radial structural functions reflect Sr-O, Sr-C, and Sr-Sr backscatters that match SrCO3 (s). At higher pH, there is only a single shell of oxygen backscatterers indicated by one peak in the radial structural functions.