[Effect of overheating products of wood hydrolysis on 3,4-benzpyrene output].

Under study was the effect of overheating of wood pyrolysis products at 600 degrees C on the content of 3,4-benzpyrene in them. Overheating only of the water portion of pyrolysis products would increase considerably its BP content, on account of it the total output of the carcinogen is increased. While overheating of total pyrolysis products results in still greater increase of total BP output on account of its concentration rise both in the water portion and resin. Overheating of resin separately would result in a 7 times increase of BP concentration in it.