Multi-analytical study of the suspected binding medium residues of wall paintings excavated in Tang tomb, China

The analysis of the organic binding media in the field of cultural relics is invariably challenging due to the micro-amount, complex ingredients and degradation problems. Black residues of suspected binding media were discovered in a tomb archaeological site of the Tang dynasty (618-907AD), one of the most prosperous time in the ancient China. In the frame of excavation campaign it is becoming a demand to analyze the precious archaeological samples to know more about the composition of these materials. In this paper, efforts were made to analyze this sample with Fourier Transform Infrared Spectroscopy (FTIR) and Gas Chromatography (GC), attempting to learn the materials' consistence. This study would enrich the research of the materials of mural paintings in the Tang dynasty as well as providing a scientific basis for the future restoration.