[Raman Application] Defect on art

There is a small defect on drawing; we can use multi-angle MRI micro Raman spectrometer to do the measurement.


The defect is very small on art on the wall. we just can use horizontal mothed of Micro Raman of MRI to measure the defect raman spectra. The picture below is from a private museum, They suspect that a contaminant from environment was deteriorating this artwork, due to a change in some parts of its surface, the segment was scanned by MRI in-situ, and the spectra obtained was compared to PTT's Laboratory database and we finding out the sample was polluted by Sulfur. The result is consistent considering that this museum is located near to a natural hot spring ares which has high level of Sulfur.