Fig. 7From: Effects of metal cation substitution on hexavalent chromium reduction by green rustFourier transformed Fe K-edge EXAFS spectra and fits after 7 days reaction time, as well as a feroxyhyte spectrum for comparison . Fit statistics and sample-specific fitting parameters outlined in Table 3. Fits performed over an R-range of 1.1–3.5 ÅBack to article page