Where It Comes From
Diesel and gasoline engine exhaust, urban air particles, and deposition on soil and dust near roadways; formed during combustion and atmospheric reactions [1][2].
How You Are Exposed
Breathing traffic-related air pollution (near busy roads, diesel equipment), contaminated indoor air that infiltrates from outdoors, and contact with polluted dust/soil [1][2][3].
Why It Matters
Long-term exposure may increase cancer risk; 6‑nitrochrysene is a potent mutagen and carcinogen in animal studies [1].
Who Is at Risk
People working around diesel engines (drivers, mechanics, heavy equipment operators), residents near high-traffic corridors, and children and pregnant people who are more sensitive to air pollution [1][3][4].
How to Lower Your Exposure
Limit time near idling engines; use recirculate/close windows in heavy traffic; improve indoor filtration with HEPA or high-MERV filters; wet-wipe/HEPA-vacuum dust; support cleaner engines and fuels [3][4].
References
- [1]IARC Monographs, Volume 105: Diesel and Gasoline Engine Exhausts and Some Nitroarenes. International Agency for Research on Cancer, 2013.
- [2]ATSDR. Toxicological Profile for Polycyclic Aromatic Hydrocarbons (PAHs). Agency for Toxic Substances and Disease Registry, 2020.
- [3]CDC/NIOSH. Workplace Safety & Health Topic: Diesel Exhaust, 2020.
- [4]EPA. Particle Pollution and Your Health (EPA-452/K-13-001) and Guide to Air Cleaners in the Home, U.S. Environmental Protection Agency.