描述:
Some historical oil paintings suffer from damaging by white crystalline inorganic substances precipitated after long years. Main component of the white crystals are inorganic pigments containing heavy metals, it is necessary to confirm morphology and composition of the inorganic crystalline materials taken from various parts of the paintings. Herein we observed morphology and analyzed chemical deposition with EPMA (Electron Probe Micro Analyzer) and measured UV-Vis (ultra violet-visible), fluorescence, and IR (infrared) spectra for several microcrystals taken from ground layer, pigments, and surface of some Japanese oil paintings drawn in the 19th century by the same cultural policy.