A Multivariate Methodological Workflow for the Analysis of FTIR Chemical Mapping Applied on Historic Paint Stratigraphies

Figure 7

Sample PO1. (a) PC25 score plot: cluster highlighted in red indicate the objects localised within the PC2 score map (layer 1); (b) PC25 loading plot; (c) PC2 score map: The white points indicate objects localised within layer 1; (d) average spectral profile extracted from layer 2.

(a)

(b)

(c)

(d)