@article{oai:tsukuba.repo.nii.ac.jp:00045954, author = {ZHOU, Yishan and 松井, 敏也 and MATSUI, Toshiya and KOAKUTSU, Noriko}, journal = {世界遺産学研究, JOURNAL OF WORLD HERITAGE STUDIES}, month = {Mar}, note = {The occurrences of the whitening phenomenon of wood in the case of cultural historic architecture have been commonly considered as activities of white rot fungi or degradation caused by solar radiation. Recent studies confirmed that transportation of inorganic compounds with Ca, S and etc. content from stone in vicinity of wood may results in the whitening phenomenon of wood. While in whitening area of wood adjacent to Cu alloy, precipitations of copper or zinc oxalate compounds were confirmed. The whitening phenomenon is observed either in wood adjacent to the stone base or copper components in the case Confucian Temple of the Kodokan (水戸弘道館孔子廟, Mito City, Ibaraki Prefecture). In order to figure out characteristics of the whitening phenomenon occurred in different locations, nondestructive scientific investigation of elemental analysis, microscopic observation, colourimetric measurements were conducted. The investigation confirmed that the whitening phenomenon in wood structures lower than 70 cm height is predominantly affected by Ca, Fe, Cl, S elements, whitening phenomenon of wood adjacent to copper components is predominantly affected by Cu element. Cu element from copper components tends to spread along the longitude direction of the wood. Results of microscopic observation imply that both in "Ca affected" and "Cu affected" wood, the occurrences of whitening phenomenon could be attributed to the formation of precipitation particles among the wood tissues, and degradation of wood tissues.}, pages = {48--59}, title = { Nondestructive investigation of whitening phenomenon occurred on wood components of historic architecture: in the case of the Confucian Temple of the Kodokan of Mito Domain}, volume = {5}, year = {2018}, yomi = {マツイ, トシヤ} }