Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
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A Scientific Analytical on the Ancient Shipwrecks Degradation Products Excavated from Underwater: Focused on Sulfur and Iron Degradation Products

  • Ji-Seon SONG (Conservation & Collection Management Division, National Research Institute of Maritime Heritage (NRIMH)) ;
  • Yong-Hee YOON (Conservation & Collection Management Division, National Research Institute of Maritime Heritage (NRIMH)) ;
  • Chang-Hyun PARK (Conservation & Collection Management Division, National Research Institute of Maritime Heritage (NRIMH))
  • Received : 2024.01.29
  • Accepted : 2024.03.06
  • Published : 2024.05.25
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Abstract

In this study, samples were collected from various ancient wooden shipwrecks, including the Shinan shipwreck and Jindo shipwreck that used iron nails, the Yeongheungdo shipwreck carrying iron artifacts, as well as the Sibidongpado shipwreck and Wando shipwreck where degradation products were not observed, all of which were salvaged by the National Research Institute of Maritime Heritage. The aim was to analyze the characteristics of degradation products generated by iron (Fe) within the salvaged wooden shipwreck materials and establish fundamental data on degradation products in waterlogged archaeological wood. The analysis revealed that sulfur (S) is generally accumulated in wood obtained from marine environments. It was observed that the content of inorganic substances such as iron and sulfur was significantly higher in the Shinan shipwreck, Jindo shipwreck, and Yeongheungdo shipwreck compared to Sibidongpado shipwreck and Wando shipwreck, which used wooden nails. This indicates that the presence of iron affects the accumulation of degradation products and suggests that iron is a factor in the corrosion of wood. Furthermore, crystallin compounds were observed within the cell walls, and higher concentrations of iron and sulfur were found in the resin ducts, rays, and radial tissues. This suggests that during desalination and consolidation treatments, warm water or polyethylene glycol (PEG) may move degradation factors into resincanals, rays, radial tissues, etc.

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References

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