This study presents a new chronometric method for the dating of wood. The clock used is the chemical breakdown of specific parts, such as the acetyl groups of the hemicelluloses. The presented prediction models cover a maximum of 3000 years and include old living trees, construction wood and cold waterlogged wood. Any other preservation conditions are not covered by these models. Under these conditions, abiotic factors dominate and the contribution of microbial decay is negligible. This is a pre-requisite for the application of the present models. Brittle parts of the wood cannot be dated. Infrared spectroscopy was applied to detect the molecular changes over time. Currently, four models are available for Norway spruce, European larch, oak, and silver fir.

中文翻译：

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分子木材老化的红外光谱表征

这项研究提出了一种新的木材测年方法。使用的时钟是特定部分的化学分解，例如半纤维素的乙酰基。所提出的预测模型最多涵盖 3000 年，包括老树、建筑木材和冷水浸水木材。这些模型不涵盖任何其他保存条件。在这些条件下，非生物因素占主导地位，微生物腐烂的贡献可以忽略不计。这是应用现有模型的先决条件。木材的脆性部分无法确定日期。应用红外光谱来检测分子随时间的变化。目前，有四种型号可用于挪威云杉、欧洲落叶松、橡木和银杉。