DescriptionCircumstances of exposureTumour sites (or types)
for which there is sufficient evidence of carcinogenicity in humans
Diesel engine exhaust is a complex mixture of both gaseous and particulate components, containing cancer-causing substances including polycyclic aromatic hydrocarbons (PAHs), benzene, 1,3-butadiene, formaldehyde, ethylene oxide, and metals.
The composition and quantity of the emissions from an engine depend mainly on the type and condition of the engine, fuel composition and additives, operating conditions, and emission control devices.
The primary source of exposure is engine exhausts due to the use of diesel engines in cars, trucks, locomotives, and other motorized machinery.
  • Lung