@article{oai:tobunken.repo.nii.ac.jp:00005754,
 author = {濱田, 翠 and 早川, 典子 and Midori, HAMADA and Noriko, HAYAKAWA},
 issue = {57},
 journal = {保存科学, Science for conservation},
 month = {Mar},
 note = {The photographs of the wall paintings in Kondo, Horyu-ji were taken in 1935as a work of the national conservation project for the wall paintings. It is regarded valuable document as the only material which shows the paintings before they were damaged by fire in 1949, and the negative plates of the photographs were designated national important cultural property in 2015. The document includes 431glass dry plates and 15negatives of infrared photographs. Even though film bases of negatives in those days are thought to have been nitrate or acetate, the bases of the negatives of the infrared photographs are considered to be cellulose nitrate. Therefore, they were analyzed because it was necessary to identify materials for considering their preservation method.
The nitrate film base had been put to practical use since 1889and was used until the 1950s. However, it has a risk of self-heating and must be conserved under appropriate conditions. The acetate film base which began to be used in 1948tends to cause decomposition by hydrolysis, the so-called ‘‘vinegar syndrome.’’ Thus these two kinds of film should be conserved in environment under low temperature and low humidity.
Fifteen negatives of infrared photographs were analyzed, and it was found that their spectra of emulsion part showed similar spectrum to that of gelatin. Furthermore spectra of two of the fifteen bases also showed pattern similar to that of nitrate film base. If it can be confirmed that the other films were also produced in the same method, it may be　possible to think that they used a similar support.},
 pages = {101--109},
 title = {〔報告〕法隆寺金堂壁画写真原板のフィルム支持体に関する赤外分光分析},
 year = {2018}
}