Tree bark is an interesting source for various building and furniture materials. It holds a high number of volatile components—resulting in emissions whose effects on building residents have to be considered. Spruce and larch barks were dried using different methods and prepared as loose particles and panels. The VOC (volatile organic compound) emissions after 3 and 14 days were measured in a small chamber using gas chromatography and coupled mass spectroscopy. The influence of bark type, drying method, hot pressing and time on the emissions was quantified. The total volatile organic compounds (TVOC) emissions from spruce bark were higher than those from larch bark. High-temperature treatment and time significantly decrease TVOC emissions from the investigated barks. Terpenes, aldehydes and acids were analysed in the emitting gases. The high temperatures whilst pressing panels are problematic due to furfural constitution. Its emissions and partly those of 2-octenal and acetic acid are relevant for present and upcoming evaluation schemes. Aldehydes are the critical substance when using bark in the interior and must be controlled in product development.

中文翻译：

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云杉（云杉）和落叶松（落叶松）树皮和树皮板挥发性有机化合物排放的定性研究

树皮是各种建筑和家具材料的有趣来源。它包含大量易挥发成分，导致排放，必须考虑其对建筑物居民的影响。用不同的方法干燥云杉和落叶松的树皮，制成松散的颗粒和木板。使用气相色谱法和耦合质谱法在一个小室内测量3天和14天后的VOC（挥发性有机化合物）排放。量化了树皮类型，干燥方法，热压和时间对排放的影响。云杉皮的挥发性有机化合物（TVOC）排放总量高于落叶松皮。高温处理和时间显着减少了所调查树皮的TVOC排放量。分析了排放气体中的萜烯，醛和酸。由于糠醛的构成，压制面板时的高温是有问题的。其排放以及部分2-辛烯和乙酸的排放与当前和即将进行的评估方案有关。醛是在室内使用树皮时的关键物质，在产品开发中必须加以控制。