Development of xenobiotic analysis system for safe reuse of wood-based materials

从保护环境和节约森林的角度出发，近年来全球都有重新考虑发展木质材料的趋势。疏材、树皮或废木材的有效利用已被广泛研究。综上所述，建筑废木材的再利用是很重要的一点。因此，检测木材中的异物对于安全再利用至关重要，因为异物通常是危险或有毒的化学物质。为了建立一种简便、快速的异种生物分析方法，研究了拉曼光谱、红外光谱、x射线荧光光谱等分析方法在木材分析中的特点，提出了一种结合这些分析技术的无湿分析系统。系统如下。首先，对废木材进行拉曼或红外测量，以检测粘合剂，防腐剂或油漆。当在废木材中发现异种生物时，通过显微光谱对其进行鉴定并进一步研究其分布。如果使用甲醛树脂，则采用气相色谱法定量挥发性有机化合物。当木质材料中含有无机化合物时，我们用x射线荧光光谱法对材料进行元素分析。我们的分析系统还没有付诸实践。为了精简和简化，我们正在改进这一制度

From the viewpoint of environment protection and forest saving, there has been recently a global tendency to reconsider development of wood-based materials. Effective utilization of thinnings, bark or waste wood has been studied widely. Above all, reuse of construction waste wood is an important point. Thus, it is essential for safe reuse to detect foreign materials in wood because foreign materials are often hazardous or toxic chemicals.For the purpose of establishing an easy and quick xenobiotic analytical method, we investigated the characteristics in wood analysis of Raman, infrared, X-ray fluorescence spectroscopy, etc., and proposed an analytical system for wood-based materials including no wet processes by a combination of these analytical techniques. The system is as follows.First, Raman or infrared measurements for waste wood are performed in order to detect adhesives, preservatives, or paints. When xenobiotics are found in waste wood, they are identified and further investigated the distribution by microscopic spectroscopy. Volatile organic compounds are quantified by gas chromatography if formaldehyde resin was used. When inorganic compounds are expected to be included in woody materials, we analyze elementally the materials by X-ray fluorescence spectrometry.Our analytical system has not come in practice yet. We are currently improving the system for the sake of downsizing and simplification