Figure 4
From: Quantification of calcium content in bone by using ToF-SIMS–a first approach
XPS and ToF-SIMS Ca and collagen distributions in bone cross sections. XPS (a1, a2) and ToF-SIMS (b1, b2) images of the same area of a non-osteoporotic vertebra of a 12 months sham rat. Mapping of the Ca 2p intensity (a1) represents the mineralised part while mapping of the N 1s intensity (a2) represents the collagen structure of the trabeculae. The corresponding ToF-SIMS images of the Ca+- and C4H8N+- signals also represent the mineralised part (b1) and the collagen matrix (b2) but with a much better lateral resolution.