文献类型：期刊文献

英文题名：Even Samples from the Same Waterlogged Wood Are Hygroscopically and Chemically Different by Simultaneous DVS and 2D COS-IR Spectroscopy

作者：Han, Liuyang[1] Han, Xiangna[1] Liang, Guoqing[2] Tian, Xingling[3] Ma, Fang[4] Sun, Suqin[4] Yin, Yafang[5] Xi, Guanglan[1,2] Guo, Hong[1]

第一作者：Han, Liuyang

通信作者：Xi, GL[1];Guo, H[1];Xi, GL[2]

机构：[1]Univ Sci & Technol Beijing, Inst Cultural Heritage & Hist Sci & Technol, Beijing 100083, Peoples R China;[2]Natl Ctr Archaeol, Beijing 100013, Peoples R China;[3]Chinese Acad Cultural Heritage, Heritage Conservat & Restorat Inst, Beijing 100029, Peoples R China;[4]Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China;[5]Chinese Acad Forestry, Res Inst Wood Ind, Dept Wood Anat & Utilisat, Beijing 100091, Peoples R China

年份：2023

卷号：14

期号：1

外文期刊名：FORESTS

收录：;EI(收录号：20230513454776);Scopus(收录号：2-s2.0-85146785784);WOS:【SCI-EXPANDED(收录号:WOS:000915101300001)】；

语种：英文

外文关键词：waterlogged archaeological wood; water vapor sorption; sorption model; FTIR; 2D COS-IR Spectroscopy

摘要：Waterlogged archaeological wood samples may degrade during long-term immersion in microbial-activity environments, which causes its biodegradation. Simultaneous dynamic vapor sorption (SDVS) and two-dimensional correlation infrared (2D COS-IR) spectroscopy reveal the degradation inhomogeneity of waterlogged fir wood from the Shengbeiyu shipwreck. The waterlogged and reference wood exhibit type II sorption isotherms. The equilibrium moisture contents of waterlogged archaeological fir wood from a decay region (WFD) were 22.5% higher than those of waterlogged archaeological fir wood from a sound region (WFS). WFD exhibits a higher measurable sorption hysteresis than WFS, implying greater variation in the surface moisture content in the WFD region compared to the WFS region, which may compromise the dimensional stability of the shipwreck. 2D COS-IR spectra confirmed the inhomogeneous degradation of the waterlogged wood via numerous mechanisms. The efficacy of SDVS and 2D COS-IR spectroscopy in the evaluation of the degradation state of waterlogged wood was demonstrated. This study verifies the existence of hygroscopic and chemical differences between visually similar samples from the same shipwreck.