Fig.7

Top: EDS spectrum and Zn mapping of an area of the painting “Hydra”; Bottom: Zn mapping of the same area (left); monochromatic image of the same area for a wavelength emission at 390 nm (right)
Top: EDS spectrum and Zn mapping of an area of the painting “Hydra”; Bottom: Zn mapping of the same area (left); monochromatic image of the same area for a wavelength emission at 390 nm (right)