Chemical:
1,3-Butadiene, 1,6-Dinitropyrene, 1,8-Dinitropyrene, 1-Nitropyrene, 2-Nitrofluorene, 3-Methylcholanthrene, 4-Nitropyrene, 5-Methylchrysene, 5-Nitroacenaphthene, 6-Nitrochrysene, 7,12-Dimethylbenz(a)anthracene, 7H-Dibenzo[c,g]carbazole, Acetaldehyde, Benzene, Benzo[a]pyrene, Benzo[b]fluoranthene, Benzo[j]fluoranthene, Benzo[k]fluoranthene, Benz[a]anthracene, Carbon tetrachloride, Chloroethane (Ethyl chloride), Chloroform, Chrysene, Creosotes, Dibenzo[a,e]pyrene, Dibenzo[a,h]pyrene, Dibenzo[a,i]pyrene, Dibenzo[a,l]pyrene, Dibenz[a,h]acridine, Dibenz[a,h]anthracene, Dibenz[a,j]acridine, Dichloromethane (Methylene chloride), Formaldehyde (gas), Furan, Indeno [1,2,3-cd]pyrene, Soots, tars, and mineral oils (untreated and mildly treated oils and used engine oils)