Sulfur accumulation in the timbers of King Henry VIII's warship Mary Rose: A pathway in the sulfur cycle of conservation concern
AUTOR(ES)
Sandström, Magnus
FONTE
National Academy of Sciences
RESUMO
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 ≈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.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1234901Documentos Relacionados
- Mary Rose Kirkpatrick
- The thorns on the rose: the history of sexually transmitted diseases in Australia in international perspective
- Um retrato de Rose: considerações sobre processos interpretativos e elaboração de história de vida
- Vereda da SalvaÃÃo e Terra para Rose: interfaces entre a escritura documental no teatro e no cinema
- Glycolytic Breakdown of Sulfoquinovose in Bacteria: a Missing Link in the Sulfur Cycle