Table 1.

VOCs emitted from wood.

Extractives/Group of VOCs	VOC	Pine *		Spruce *		Larch *		Fir	Douglas Fir	Aspen	Oak	Beech	Wood Species
		Concentration in the Test Chamber (µg/m3) Sapwood/Heartwood		Concentration in the Test Chamber (µg/m3) Sapwood/Heartwood		Concentration in the Test Chamber (µg/m3) Sapwood/Heartwood
Terpenes	α-pinene	3459/294	[31,44,60,70,71,73,74]	119/320	[60,71,75]	126/509	[76]	[61,77]	[78]				Reference
	β-pinene	13/16	[44,60,70,74]	−/74	[60,71,75]	4/14		[61,77]	[78]
	Camphene	23/10	[44,70,71,74]	<1/−	[71,75]	<1/6	[76]	[61,77]
	Δ3-carene	108/40	[31,44,60,70,71,74]	63/45	[71,75]	17/16	[76]	[61,77]	[78]
	Limonene	5/<1	[31,44,70,74]	30/19	[60,71,75]	13/7		[61,77]	[78]
Aldehydes	Benzaldehyde	<1/6	[70,71,74]	<1/1	[75]	7/3	[79]			[71]
	Decanal	11/16	[70,74]	−	[71,75]	7/−				[71]
	Furfural	/	[70,71,74]	/	[71]	/				[71]
	Hexanal	4/162	[31,44,70,71,74]	−/17	[71,75]	8/24	[76,79]			[71]	[16]
	Nonanal	4/12	[71,74]	4/12	[71,75]	7/10	[76,79]			[71]
	Octanal	1/7	[70,74]	<1/−		5/5				[71]
	Pentanal	−	[70,71,74]	−		−/18				[71]
	Formaldehyde	/	[80,81]	/	[80,81]	/				[81]	[81,82]	[81]
Acids	Acetic acid	/	[31,71,74]	/	[71]	/	[76,79]			[71]	[16,83]	[83]

Note: a group of most abundant VOCs emitted from different species of wood, comprising concentrations of VOCs emitted from sapwood/heartwood on day 31 -values based on the recent study from Czajka et al. [72]. Some other compounds, e.g., Thymol, Myrtenal, Thujen, Terpinen or Terpineol, were detected by GC-MS. * most often used industrial wood species.