Simple separation of Torreya nucifera and Chamaecyparis obtusa wood using portable visible and near-infrared spectrophotometry: differences in light-conducting properties
Simple separation of Torreya nucifera and Chamaecyparis obtusa wood using portable visible and near-infrared spectrophotometry: differences in light-conducting properties
复制标题
使用便携式可见光和近红外分光光度法简单分离香榧和扁柏木材：导光性能的差异
DOI：
10.1007/s10086-016-1541-z
复制
发表时间：
2016
影响因子：
2.9
通讯作者：
H. Wada
中科院分区：
文献类型：
--
作者：
H. Abe;Ken Watanabe;A. Ishikawa;S. Noshiro;T. Fujii;Mitsuharu Iwasa;Hiroaki Kaneko;H. Wada
鉴定具有考古/历史意义的人工制品中的木材种类对于修复和维护人工制品以及了解其历史和文化背景都很重要。近20年来，我们通过收集微小的、自然分离的碎片，并使用光学或扫描电子显微镜观察它们，来研究人工制品中的木材[1-3]。我们发现，在公元8世纪以后，香榧树（红豆杉科）和柏树（柏科）的树木经常被用来建造佛像。上述方法的一个问题是，有时很难获得足够质量和数量的样品来进行明确的鉴定。由于这个原因，为工件的非侵入性检查开发替代方法是很重要的。我们应用近红外（NIR）光谱对木质佛像中常用的木材进行了无创鉴定。在这样做的过程中，我们使用多变量分析成功地分离了T. nucifera和C. obtusa[4,5]。然而，人们认为，对于100多年前制作的木制佛像来说，这两个物种的分离变得困难，因为长时间暴露在周围环境中会导致化学成分的降解。然后，需要在不参考化学成分的情况下分离两种物质的其他方法。在这项研究中，我们建立了一种简单的方法，根据不同木材的光导率的差异，来区分金针菇和圆针菇。然后，我们评估了使用便携式光谱仪分离金针菇和黄金针菇的可能性。
The identification of wood species in artifacts of archeological/historical significance is important both for repairing and maintaining the artifacts and for understanding their historical and cultural backgrounds. For nearly 20 years, we have examined wood in artifacts by collecting minute, naturally detached fragments and observing them with light or scanning electron microscopy [1–3]. We found that the woods of Torreya sp. (Taxaceae) and Chamaecyparis sp. (Cupressaceae) were frequently used to construct Buddhist statues after the 8th century AD. One problem with the above approach is that it is sometimes difficult to obtain samples with sufficient quality and quantity to make a definitive identification. For this reason, it is important to develop alternative methods for a non-invasive examination of artifacts. We have applied near infrared (NIR) spectroscopy to noninvasively identify wood species frequently used in wooden Buddhist statues. In doing so, we achieved a successful separation of T. nucifera and C. obtusa using multivariate analysis [4, 5]. However, it is considered that the separation of both species becomes difficult in the case of wooden Buddhist statues made more than several 100 years ago, because of the degradation of chemical compositions caused by exposure to circumferential condition for a long time. Then, other methods for separating both species without referring to the chemical compositions are desired. In this study, we developed a simple method to separate T. nucifera and C. obtusa based on the difference in the light conductivities of their wood. We then evaluated the possibility of separating T. nucifera and C. obtusa using a portable photospectrometer.
Nakura，J.：日本内分泌学。
DOI：
--
发表时间：
--
期刊：
影响因子：
--
作者：
通讯作者：
--