The emission characterization of 17 polycyclic aromatic hydrocarbons (PAHs) emitted from honeycomb coal briquette combustion was studied, including the partition between the particulate and gaseous phases and the distribution as a function of particle size. The result showed that the contribution of vapor phase was very important to the total PAHs emitted, while particulate phase contributed most of the total carcinogenicity. Submicron particles dominated the size distribution of PAHs mass, and higher molec...