Fig. 11From: Composition and techniques of the Ticinese stucco decorations from the 16th to the 17th century: results from the analysis of the materialsAnalytical results of the FT-IR investigations. The transmission spectra after derivatization with sulfur tetrafluoride are labeled with "SF4". a Example of FT-IR spectrum where a protein component was detected; b Example of FT-IR spectrum containing also possible lipids; c Example of FT-IR spectrum where calcium oxalates were foundBack to article page