Figure 4
XANES spectra of different compounds: references (in red, HAP, well crystallized synthetic apatite; in blue, CA, biological apatite; in black, ACCP, amorphous biological apatites) and biopsies [(1) and (2) are the X-ray absorption spectra collected when the beam is positioned on the RP]. Details regarding the pre-peak A, the shoulder B and the double peaks C1–C2 are clearly visible. |