Custom mix of C15-C21 PAHs 1752.15 4-Ethyl-6-methyldibenzothiophene 8,0 µg/mL 0260.16 Fluoranthene 0,6 0289.17 1-Methylfluoranthene 5,8 1218.18 3-Ethylfluoranthene 1,6 0235.16 Pyrene 1,2 0304.17 1-Methylpy