EL GRECO From Italy to Toledo

Click on each painting to display the layers.

Cross-section seen under a scanning electron microscope [SEM] of a microsample taken from the reddish area of the floor tile (G: ground, P: primer, PT: paint layer). Right, the EDS spectrum obtained after analysing the primer layer (I) in which only white lead (Pb) and a small amount of calcium carbonate (Ca) are detected.