Fig. 6. (a):Se K-Edge XANES spectra of selenite sorbed onto Mt, HYA,HAS, HYA-Mt, and HAS-Mt samples. HSeO₃ and H₂SeO₃ solutions are included for comparison. (b) 12.665 to 12.69 keV energy range expanded to more clearly show differences in the near edge spectra for HAS, HYA, HYA-Mt, and Mt samples.