Sandström Magnus, Jalilehvand Farideh, Damian Emiliana, Fors Yvonne, Gelius Ulrik, Jones Mark, Salomé Murielle
Department of Structural Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden.
Proc Natl Acad Sci U S A. 2005 Oct 4;102(40):14165-70. doi: 10.1073/pnas.0504490102. Epub 2005 Sep 26.
In marine-archaeological oak timbers of the Mary Rose large amounts of reduced sulfur compounds abound in lignin-rich parts such as the middle lamella between the cell walls, mostly as thiols and disulfides, whereas iron sulfides and elemental sulfur occur in separate particles. Synchrotron-based x-ray microspectroscopy was used to reveal this environmentally significant accumulation of organosulfur compounds in waterlogged wood. The total concentration of sulfur in reduced forms is approximately 1 mass % throughout the timbers, whereas iron fluctuates up to several mass %. Conservation methods are being developed aiming to control acid-forming oxidation processes by removing the reactive iron sulfides and stabilizing the organosulfur compounds.
在玛丽玫瑰号的海洋考古橡木中，大量还原态硫化合物存在于富含木质素的部位，如细胞壁之间的中层，主要以硫醇和二硫化物的形式存在，而硫化铁和元素硫则以单独的颗粒形式出现。基于同步加速器的X射线显微光谱法被用于揭示这种在浸水木材中具有重要环境意义的有机硫化合物积累现象。整个木材中还原态硫的总浓度约为1质量%，而铁的含量波动可达几个质量%。目前正在开发保护方法，旨在通过去除活性硫化铁并稳定有机硫化合物来控制形成酸的氧化过程。
