Figure 1
Comparison of P K-edge XANES spectra of common energy calibration standards. First and second derivative traces depicted with red and blue dashed lines, respectively, are offset on the y-axis by +2 or +4 intensity units. P K-edge XANES data for hydroxyapatite, Ca5(PO4)3(OH), were obtained from the ID21 Phosphorous XANES Spectra Database and are reported by Kim et al. (2015). |