Figure 2

Data processing on the PyMca ROI imaging software of one of the samples. (a) Original μXRF map of an ROI; (b) I/I₀ normalization of the μXRF map; (c) RGB correlation of the elemental distribution maps of calcium, iron, and magnesium; (d) Original μXRPD map of the same ROI and (e) μXRPD map after the 1D background correction.