Carbon monoxide |
Volatile organic compounds |
Non-methane volatile organic compounds |
Polycyclic aromatic hydrocarbons |
Hexachlorobenzene, polychlorinated biphenyls, dioxins, and furans |
Nitrogen monoxide |
Nitrogen dioxide |
Nitrogen oxides as nitrogen dioxide |
Particulate matter PM10 |
Particulate matter PM2.5 |
Total suspended particulate matter TSP |
Carbon black (soot) |
Sulfur oxides as sulfur dioxide |
Ammonia |
Heavy metals: lead, cadmium, mercury, arsenic, chromium, copper, nickel, zinc, selenium |