Polycyclic aromatic hydrocarbons (PAHs) are common urban air pollutants. Those who work at coke-oven, foundry, and electric arc furnace industries not only acquire greater exposure to PAHs but also are higher risk of health effect than those in other occupations. Foundry is the cornerstone of economic development in Taiwan. Hence, it is necessary to estimate PAHs levels in foundry environment. This study assessed PAHs the distribution of different particle sizes, and compared PAHs characteristics between gas phase and solid phase. We further evaluated relationships between the external PAHs exposure and internal metabolites such as 1-hydroxypyrene (1-OHP), 8-hydroxydeoxyguanosine (8-OHdG) and DNA adduct N7-methylguanine (N7-MeG). Results showed that 48% ~95% PAHs existed in respirable dusts (<4
