Compound Certified Reference Value Compound Certified Reference Valueµg/g µg/gPhenanthrene . 15.8 ± 1.2 Benzo(k)fluoranthene. 4.4 ± 0.5Anthracene . 1.2 ± 0.3 Benzo(e)pyrene. 5.3 ± 0.6Fluoranthene. 23.2 ± 2.0 Benzo(a)pyrene. 5.3 ± 0.7Pyrene. 16