1,3-Butadiene
1,6-Dinitropyrene
1,8-Dinitropyrene
1-Nitropyrene
2-Nitrofluorene
3,7-Dinitrofluoranthene
3,9-Dinitrofluoranthene
5-Methylchrysene
Acetaldehyde
Arsenic (inorganic arsenic compounds)
Benzene
Benzo[a]pyrene
Benzo[b]fluoranthene
Benzo[j]fluoranthene
Benzo[k]fluoranthene
Benz[a]anthracene
Cadmium
Carbon monoxide
Chrysene
Cobalt [II] oxide
Dibenzo[a,h]pyrene
Dibenz[a,h]acridine
Dibenz[a,h]anthracene
Dibenz[a,j]acridine
Diesel engine exhaust
Formaldehyde (gas)
Indeno [1,2,3-cd]pyrene
Lead
Lead and lead compounds
Nickel
Toluene