Precise radiocarbon dating of conserved archaeological woods

保存材料，如聚乙二醇和乳醇用于保存淹水的木材会污染木材的放射性碳日期。为了揭示保存木材的精确放射性碳定年能力，对木材样品进行了放射性碳定年处理和定年。结果表明，碳污染对精确测年影响较小。同时采用Py-GC/MS检测污染情况。这一结果表明，Py-GC/MS在放射性碳测年中具有检测污染的可能性。

Conservation material such as PEG and lactitol used for preservation of waterlogged woods will contaminant radiocarbon dates of the woods. In order to disclosed capability of precise radiocarbon dating of the conserved woods, the wood samples were treated and dated by radiocarbon dating. As the results, carbon contamination which disturb precise dating was slightly observed. The contamination was also detected by Py-GC/MS. This result imply that Py-GC/MS has a possibility to detect the contamination for radiocarbon dating.