The presented studies were carried out in order to check the usefulness of subfossil wood for stable isotope analysis. The aim of research was also to define the optimal method of subfossil samples preparation. Subfossil samples used during the presented studies are a part of the multicentury dendrochronological scale. This chronology originates in an area situated around a small mountain lake — Schwarzersee, in Austria.The obtained results of stable carbon isotope measurements confirmed that the method of α-cellulose extraction by the application of acidic sodium chlorite and sodium hydroxide solutions removes resins and other mobile compounds from wood. Therefore, in the case of the analysed samples, the additional chemical process of extractives removing was found to be unnecessary. Studied wood samples contained an adequate proportion of α-cellulose similar to the values characteristic for the contemporary trees. This proved an adequate wood preservation which is essential for the conduction of isotopic research.

中文翻译：

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奥地利阿尔卑斯山亚化石木材的稳定碳同位素分析

所提出的研究是为了检查亚化石木材对稳定同位素分析的有用性。研究的目的还在于确定亚化石样品制备的最佳方法。在所提出的研究中使用的亚化石样本是多世纪树木年代学规模的一部分。该年表起源于位于奥地利施瓦泽湖（Schwarzersee）周围的一个小山湖地区。获得的稳定碳同位素测量结果证实，应用酸性亚氯酸钠和氢氧化钠溶液提取 α-纤维素的方法可以去除树脂和其他物质。来自木材的移动化合物。因此，在分析样品的情况下，发现去除萃取物的额外化学过程是不必要的。研究的木材样品含有足够比例的 α-纤维素，类似于当代树木的特征值。这证明了对进行同位素研究至关重要的充分木材保存。