Abstract
Polycyclic aromatic hydrocarbon (PAH) contents of the particulates or sooty-tars produced during wood-combustion and -pyrolysis were investigated in simulated air (N2 : O2 v/v%) and nitrogen gas streams under heat flux in the range 1.5 - 5.0 W/cm2. The PAH contents were assessed in comparison with those of other airborne-particulates in urban and expressway tunnel atmospheres. After PAH fraction in an ultrasonic extract was preseparated by means of one-dimensional dual-band thin-layer chromatography, the PAH fraction was analyzed by method of high-performance liquid chromatography.
The PAH contents for the incomplete combustion of wood was markedly higher than in wood-pyrolysis. Furthermore, the ratios of fluoranthene and pyrene to benzo (a) pyrene contents were considerably higher than in airborne particulates from the environments. The PAH contents at the former case were at the same level to the typical airborne-particulates.
© 1984 Center for Fire Science and Technology, Research Institute for Science and Technology, Tokyo University of Science
