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Open AccessArticle

Emission of Volatile Organic Compounds from Heartwood and Sapwood of Selected Coniferous Species

1
Łukasiewicz Research Network-Wood Technology Institute, Environmental Protection and Wood Chemistry Department, Winiarska 1, 60-654 Poznań, Poland
2
Poznan University of Life Sciences, Faculty of Wood Technology, Department of Furniture Design, Wojska Polskiego 38/42, 60-627 Poznań, Poland
3
Poznan University of Life Sciences, Faculty of Wood Technology, Department of Wood Science, Wojska Polskiego 38/42, 60-627 Poznań, Poland
*
Author to whom correspondence should be addressed.
Forests 2020, 11(1), 92; https://doi.org/10.3390/f11010092
Received: 22 November 2019 / Revised: 7 January 2020 / Accepted: 7 January 2020 / Published: 11 January 2020
(This article belongs to the Section Forest Ecophysiology and Biology)
The qualitative and quantitative composition of volatile organic compounds (VOC) emitted from furnishings from solid wood and all kinds of wood derivative materials depends on many factors, of which the most important is the wood species. The intraspecies and interspecies differences in VOC emission result from the differences in the chemical composition and anatomical structure of heartwood and sapwood of different species. VOC composition analysis was performed separately for heartwood and sapwood of Scots pine (Pinus sylvestris L.), Norway spruce (Picea abies (L.) Karst.) and European larch (Larix decidua Mill.) trees. The studies were conducted in a glass climatic chamber of 0.025 m3, equipped with a system for the monitoring and control of climatic conditions. Samples of air for analyses were collected after 3, 7, 14 and 28 days of exposure. The results provided evidence for interspecies and intraspecies differences in the qualitative and quantitative compositions of VOC. The concentration of total VOC (TVOC) released from heartwood of Scots pine was higher than that released from sapwood. For European larch and Norway spruce, the opposite relations were observed. The VOC emission from Scots pine heartwood was about 17 times higher than the emission from European larch and Norway spruce heartwood. The differences in TVOC emitted from the sapwood of samples from different species were smaller. For each of the species, the highest percentage contribution to TVOC was made by terpenes. The second highest percentage contribution in TVOC was made by compounds containing a carbonyl group, mainly aldehydes, while aromatic compounds made the third highest contribution.
Keywords: volatile organic compounds; fresh wood; heartwood; sapwood; Scots pine; European larch; Norway spruce volatile organic compounds; fresh wood; heartwood; sapwood; Scots pine; European larch; Norway spruce
MDPI and ACS Style

Czajka, M.; Fabisiak, B.; Fabisiak, E. Emission of Volatile Organic Compounds from Heartwood and Sapwood of Selected Coniferous Species. Forests 2020, 11, 92.

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