Different decay patterns observed in a nineteenth-century building (Palma, Spain).
The effects of atmospheric pollutants and climatic conditions were studied in a decayed column in the Seminary of Sant Pere. This nineteenth-century building is situated in the historic centre of Palma (Mallorca, Spain), less than 0.5 km from the sea. Samples were collected from the internal and external part of the crusts formed in the four sides of the column. The samples were analysed by means of thermal analysis, X-ray diffractometry, scanning electron microscopy, Fourier transform infrared spectroscopy and ion chromatography. Results show significant differences in the four sides of the column. A high degree of carbonate stone sulfation is observed in all of the samples analysed. A synergistic effect between atmospheric factors and micropollutants on the deterioration of stone is observed. A high uptake of atmospheric particulate matter is found in the external part of the black crusts.
Department of Chemistry, University of the Balearic Islands, 07122, Palma de Mallorca, Spain, nina.genestar@uib.es.
Catalina
C
Genestar
Carmen
C
Pons
José Carlos
JC
Cerro
Víctor
V
Cerdà
D002119:Calcium Carbonate / Q000032:analysis / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D052638:Particulate Matter / Q000032:analysis; D013030:Spain; D017550:Spectroscopy, Fourier Transform Infrared; D013818:Thermogravimetry; D014961:X-Ray Diffraction
D052638:Particulate Matter; D002119:Calcium Carbonate