Fig. 6From: The white of the 20th century: an explorative survey into Dutch modern art collectionsa PCA scoreplot and loadingplots (PC1 and PC2) of 11 paintings by J.C.J. van der Heyden, averaged over the spectra of the white areas. PCA was done taking only the white elements (Ca, Ti, Ba, Zn, Pb) into account. b Bivariate Ba-L vs Zn-K analysis and PCA scoreplot of 7 paintings by van K. van Bohemen, averaged over the spectra of white areasBack to article page