抄録
It is already known that the infrared spectroscopy is one of the most useful method for the identification of cultural properties, especially for organic materials. However usual analytical procedure, such as Transmission (TR) or Attenuated Total Reflection measurement (ATR), requires preliminary treatment of sampling, and sometimes give damages to valuable samples by mixing or pressing. Contrary to this, Photoacaustic Spectroscopy (PAS) uses totally non-destructive procedures. To clarify the advantage of PAS compared with other procedures, some kinds of natural fibers (processed silk, hemp and ramie) were investigated in this study using PAS, TR or ATR. As a results, we confirmed that PA spectra of these samples were almost identical with that of other procedures (TR or ATR), and PAS could measure using very small amount of samples. We are further continuing the PAS study using various kind of organic cultural properties.
