Formaldehyde emission from solid wood

Formaldehyde parameters of five European wood species (Fagus, Pseudotsuga menziesii, Quercus, Picea, Pinus) were determined using test methods applicable for wood-based materials. The five wood species studied showed differences in their formaldehyde emissions. Samples of green oak produced values of 9 parts per billion of formaldehyde (the highest value) and dry beech wood produced 2 parts per billion of formaldehyde (the lowest value). The emission values determined in the dry state were 1 to 2 units higher than those in the green state, with the exception of oak.