Wang Yishu, Zhao Zijun, Lin Jianqun, Ma Qinglin, Chen Linxu
International Joint Research Laboratory of Environmental and Social Archaeology, Shandong University, Qingdao 266237, China.
State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China.
Eng Microbiol. 2023 Aug 2;4(1):100107. doi: 10.1016/j.engmic.2023.100107. eCollection 2024 Mar.
The widespread presence of iron and sulfur compounds such as pyrite in marine waterlogged archeological wood (WAW) can cause irreversible damage to the safety of its preservation. This issue has been a longstanding concern for cultural heritage conservation communities. In this study, we examined the distribution and phase composition of Fe and sulfur compounds in wood samples obtained from the Nanhai I shipwreck using ESEM-EDS, micro-Raman spectroscopy, and an X-ray diffractometer. The removal of iron from WAW samples of the Nanhai I shipwreck using () was evaluated using conductivity and ICP-AES analysis. The results showed that effectively improved the removal of iron from WAW. The degradation of fresh healthy wood during treatment was also analyzed using infrared spectroscopy, and the results showed that the treatment had little effect on the samples over a short period. This study demonstrates, for the first time, the feasibility of iron extraction from marine WAW by . This was also the first attempt in China to apply biological oxidation to the removal of iron from marine archeological materials.
海浸考古木质文物（WAW）中广泛存在的铁和硫化合物（如黄铁矿）会对其保存安全性造成不可逆转的损害。这个问题长期以来一直是文化遗产保护界关注的焦点。在本研究中，我们使用环境扫描电子显微镜-能谱仪（ESEM-EDS）、显微拉曼光谱仪和X射线衍射仪，研究了从南海I号沉船获取的木材样本中铁和硫化合物的分布及相组成。使用（）通过电导率和电感耦合等离子体原子发射光谱（ICP-AES）分析评估了南海I号沉船WAW样本中铁的去除情况。结果表明，（）有效提高了WAW中铁的去除率。还使用红外光谱分析了处理过程中新鲜健康木材的降解情况，结果表明在短时间内该处理对样本影响很小。本研究首次证明了通过（）从海洋WAW中提取铁的可行性。这也是中国首次尝试将生物氧化应用于从海洋考古材料中去除铁。
