Figure 2
Comparison of the P K-edge XANES spectra of non-crystalline FePO4·2H2O, free inositol hexakisphosphate (IHP) (a, b) orthophosphate retained by ferrihydrite, (c, d) IHP retained by ferrihydrite for initial solution concentrations 1, 5 and 10 mg P L−1, and (e, f) a 1:1 molar (with respect to the number of P atoms) mixture of orthophosphate and IHP retained by ferrihydrite (initial solution concentration 5 mg P L−1). |