Benzo[a]pyrene
Benzo[b]fluoranthene
Benzo[j]fluoranthene
Benzo[k]fluoranthene
Benz[a]anthracene
Carbazole
Chrysene
Dibenz[a,h]anthracene
Dibenz[a,j]acridine
Indeno [1,2,3-cd]pyrene
Soots, tars, and mineral oils (untreated and mildly treated oils and used engine oils)