Emission and size distribution of particle-bound polycyclic aromatic hydrocarbons from residential wood combustion in rural China

► Size distributions of particle-bound PAHs for a variety of wood fuels were measured. ► Fuel wood burning produced more PAHs associated with finer particles. ► PAHs with high molecular weight preferred to segregate into smaller particle. ► Fraction of fine particle-bound PAHs was positively correlated with moisture. ► PAH fraction in fine particle was negatively correlated with combustion efficiency.