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Heritage Science
Fig. 4 | Heritage Science

Fig. 4

From: The identification, approaches to cleaning and removal of a lead-rich salt crust from the surface of an 18th century oil painting

Fig. 4

Cross-section of sample BMRS4 #7 (white robe) after removal of the upper varnish showing the varnish layer, the white paint layer, and the double-coloured ground layers; A Darkfield illumination; B UV radiation; C SEM–EDX spectra of the area identified as the crust and indicated by the black arrows in D; D SEM-BSE image of the area shown by the black box in (A) and (B)

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