Fig. 12From: A preliminary study of Liu Kang’s palette and the discovery and interpretation of hidden paint layersClose-up of the detail of the blue street sign from Zuo La Lu and MA-XRF maps. The distribution of the three main elements, Fe, Ba, Pb, is shown. Fe-signal relates to the Prussian blue later identified with SEM–EDS and PLM. The greyscale corresponds to the intensity of the signal of each element: white equals high intensity, black means low intensityBack to article page