National-Scale Air Toxics Assessment Overview: The 33 Pollutants
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
AIR POLLUTANTS INCLUDED IN THE ASSESSMENT | |
1. acetaldehyde | 18. formaldehyde |
2. acrolein | 19. hexachlorobenzene |
3. acrylonitrile | 20. hydrazine |
4. arsenic compounds | 21. lead compounds |
5. benzene | 22. manganese compounds |
6. beryllium compounds | 23. mercury compounds |
7. 1, 3-butadiene | 24. methylene chloride |
8. cadmium compounds | 25. nickel compounds |
9. carbon tetrachloride | 26. perchloroethylene |
10. chloroform | 27. polychlorinated biphenyls (PCBs) |
11. chromium compounds | 28. polycyclic organic matter (POM)* |
12. coke oven emissions | 29. propylene dichloride |
13. 1, 3-dichloropropene | 30. quinoline |
14. diesel particulate matter | 31. 1, 1, 2, 2-tetrachloroethane |
15. ethylene dibromide | 32. trichloroethylene |
16. ethylene dichloride | 33. vinyl chloride |
17. ethylene oxide | |
* also represented as 7-PAH |