文献类型：期刊文献

英文题名：Combining microscale ATR-FTIR and chemometrics to interpret degradation characteristics of earlywood, latewood, and compression wood in waterlogged archaeological pine wood

作者：Li, Ren[1] Zhang, Zhiguo[4] Jiao, Lichao[2,3] Yin, Yafang[2,3] Tie, Fude[1] Sun, Manli[1]

第一作者：Li, Ren

通信作者：Sun, ML[1];Jiao, LC[2];Jiao, LC[3]

机构：[1]Northwest Univ, Sch Culture Heritage, China Cent Asia the Belt & Rd Joint Lab Human & En, Key Lab Cultural Heritage Res & Conservat, Xian 710127, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[3]Wood Specimen Resource Ctr Natl Forestry & Grassla, Beijing 100091, Peoples R China;[4]Natl Ctr Archaeol, Beijing 100013, Peoples R China

年份：2024

卷号：12

期号：1

外文期刊名：HERITAGE SCIENCE

收录：;Scopus(收录号：2-s2.0-85208728262);WOS:【SCI-EXPANDED(收录号:WOS:001348880100002)，A&HCI(收录号:WOS:001348880100002)】；

基金：We would like to thank Xiaomei Jiang, Juan Guo, Yang Lu, Jiabao Chen, and Yonggang Zhang from the Research Institute of Wood Industry, Chinese Academy of Forestry, and Liuyang Han from Beijing Science and Technology University for their support of this study. We would like to thank Editage (www.editage.cn) for English language editing.

语种：英文

外文关键词：Earlywood; Latewood; Compression wood; Attenuated total reflectance Fourier transform infrared; Wood degradation; Degradation level

摘要：Interpreting the degradation characteristics of waterlogged archaeological wood (WAW) is crucial for the conservation of wooden cultural heritage. Generally, multidisciplinary diagnostic methods, including physical, micromorphological, and chemical approaches, are employed to evaluate the preservation state of WAW. However, primarily focused on the sample level, this methodology limits the understanding of the variability in degradation from a detailed perspective. In this paper, we adopted the in-situ microscale attenuated total reflectance Fourier transform infrared (ATR-FTIR) method to investigate the degradation variability in waterlogged archaeological Masson pine (Pinus massoniana) wood excavated from the ancient Chinese shipwreck Nanhai No. 1. Specifically, spectra of earlywood (EW), latewood (LW), and compression wood (CW) were extracted and combined with chemometrics to achieve rapid classification of their degradation levels. The micromorphological features of wood cell walls in conjunction with the ratios of lignin (A1509) and carbohydrate (A1370) peak areas were used to estimate the degradation levels. Unlike recent wood, moderate degradation in CW and severe degradation in EW and LW were classified in archaeological samples. The degradation levels were effectively determined through principal component analysis (PCA) and sparse partial least squares discriminant analysis (sPLSDA). The results suggest that chemometric analysis is a promising method to discern the variable degradation levels of archaeological wood at the tissue level. The methodologies developed in this study provide detailed insights into the degradation characteristics in WAW and improve the accuracy of evaluating the preservation state.