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

Figure 2

Sample 15r1. (a) PC23 score plot: clusters highlighted in red indicate the objects points localised within layer 2 (white dots in (c)) and green for points localised within layer 1 (white dots in (d)); (b) PC23 loading plot; (c, d) PC2 score map.

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