Fig. 6From: Research of a complex fire-induced pollution on the marble relief from the Pushkin state museum of fine arts collectionSEM microphotographs of the two different areas of the test marble samples: before (left side) and after (right side) treatment with a EDTA-based detergent prepared according to Lauffenburger [37], b neutral SNS-2N and c alkaline SNS-2A targeted cleaning mixturesBack to article page