Fig. 8
From: Effects of metal cation substitution on hexavalent chromium reduction by green rust

Cr K-edge XANES fits of the first derivative μ (E) for each measured sample (a). Fit performed between E-values of 5984 and 6034 eV. Dotted line at 5999 eV indicates location of pre-edge feature characteristic of Cr (III) hydroxide. b Compares the results of these fits to the 14-day oxidizable fractions shown in Fig. 3b