Journal of Environmental Health Science & Engineering34PARTICULATE POLYCYCLIC AROMATIC HYDROCARBONS IN URBAN AIR OF TEHRAN247254F. HalekGH. NabiH. GanjidoustM. KeyanpourM. Mirmohammadi20151209Polycyclic Aromatic Hydrocarbons are ubiquitous in the urban atmosphere and one of the most atmospheric pollutants to be identified as suspected carcinogens .The objective of this study was to compare particulate PAH profiles from several sites across Tehran. Atmospheric concentrations of Polycyclic Aromatic Hydrocarbons in Tehran were evaluated to study particulate PAH profiles in different sites. The particles size distributions were unimodal with a fine mode diameter (PMhttps://ijehse.tums.ac.ir/index.php/jehse/article/view/96https://ijehse.tums.ac.ir/index.php/jehse/article/download/96/95