Figure 2
Fe K-edge XANES spectra of (a) FeII sulfate, either as a solution (frozen) or as a solid after freeze drying, and (b) rice-root tissues grown in solutions containing 25 µM FeIII EDTA, either hydrated (frozen) or following freeze drying (Experiment 2). The vertical dashed lines in (a) correspond to the white line peaks of FeII sulfate (7126.1 eV) and FeIII sulfate (7131.0 eV). |