Figure 1: Chromatogram of a standard polycyclic aromatic hydrocarbons solution: 1: naphthalene, 2: acenaphtene, 3: fluorene, 4: phenanthrene, 5: anthracene, 6: fluoranthene, 7: pyrene, 8: benz[a]anthracene, 9: chrysene, 10: benzo[b]fluoranthene, 11: benzo[k]fluoranthene, 12: benzo[a]pyrene, 13: dibenz[a,h]anthracene, 14: benzo[ghi]perylene, and 15: indeno[1,2,3-cd]pyrene. Chromatographic conditions as reported in Section 2.5.