Abstract
The combined technique TGA/DTA/MS, thermogravimetric analysis/differential thermal analysis/mass spectrometry, has been used, in conjunction with other analytical techniques, FTIR, SEM, XRD, and optical microscopy, to analyze a specific patching material that had become seriously discolored on its surface after being used to repair a historic stone pillar at Bethesda Terrace in Central Park, New York in the 1980s. The stone patch was found to contain a polyacrylate binder which was associated with the discoloration.
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Gembinski, C., Charola, A.E., Price, B. et al. Application of TGA/DTA/MS to the Historic Preservation of Stone. Journal of Thermal Analysis and Calorimetry 59, 601–609 (2000). https://doi.org/10.1023/A:1010122415292
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DOI: https://doi.org/10.1023/A:1010122415292