Figure 4
XRF (1.5 µm resolution) elemental distribution maps (below) of a 50 µm × 50 µm region of tooth indicated by the red arrow in Fig. 2, and the XRF spectrum (above, 180 s count time) of the Hg hotspot shown in the XRF map. The peak denoted as P, Hg Lβ2esc arises from a combination of the P Kα emission and a Hg Lβ2/Ge escape combination event. |