Scanning Microscopy Techniques as an Assessment Tool of Materials and Interventions for the Protection of Built Cultural Heritage

<div>SEM-EDX analysis of a black crust over limestones from façades of XIII-XV centuries from Seville (Spain). (a) The blue EDX spectrum is calcium, and the red EDX spectrum is sulphur; (b) the purple EDX spectrum is calcium, and the turquoise EDX spectrum is sulphur. EDX shows the presence of a compound of sulphur and calcium on the surface (gypsum) and the matrix of calcium from limestone.</div>

Scanning

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Figure 2

Figure 2: Scanning Microscopy Techniques as an Assessment Tool of Materials and Interventions for the Protection of Built Cultural Heritage 