Instrumental analysis of materials and topology of the Imperial Gates belonging to the Apahida wooden church, Cluj County

The painting materials and wooden support of the Imperial Gates belonging to Apahida wooden church were investigated by XRF, Raman and FTIR spectroscopy. Lead minium and cinnabar are employed for red; traces of Prussian blue and smaltite for blue and green; lead carbonates, barium sulfate and zinc white for white; As2S3 for yellow. FTIR and XRD measurements confirm the wooden species as being fir. The wood conservation status was analyzed by FTIR spectroscopy, DSC and X-ray diffraction, confirming the increase of amorphous content with time; the oxalate presence was established by FTIR spectroscopy. The 3D model of Imperial Gates was recorded in order to preserve and restore these objects of cultural heritage.