Invasive Species Compendium

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Abstract

Fourier transform infrared spectroscopic analysis of the degradation of structural lumber in Horyu-ji temple.

Abstract

Horyu-ji temple was built at the end of the seventh century in Nara prefecture, Japan. It remains the oldest existing wooden building in the world. Degradation of its structural lumber was monitored by Fourier transform infrared (FTIR) spectroscopy using some accessories such as a diffuse-reflectance unit, a microscopy system, and fibre optics with a diffuse reflectance probe. Fundamental conditions for the FTIR measurements were researched with modern hinoki (Chamaecyparis obtusa). These nondestructive methods proved effective in the recognition of degraded material in cultural property.