Fig. 5From: The method to soften the concretions of ceramics in the “Nanhai I” Shipwreck of China Southern Song Dynasty (1127–1279AD)a XRD spectrum of N26 sample; b XRD spectrum of sample N21; c comparative XRD spectrum of sample N23 before and after the treatment; d comparative XRD spectrum of sample N25 before and after the treatmentBack to article page