Sources/Uses
"Coal tar pitch volatiles are products of the distillation of bituminous coal and contain polynuclear aromatic hydrocarbons." Low concentrations of 1-methylpyrene have been measured in diesel exhausts, coal combustion, industrial sediment, contaminated soil, urban air, charcoal grilling, mesquite smoke, hickory smoke, aluminum anode plant emissions, vegetable oils, lettuce, fish, mussels, and the common elder duck; [HSDB]