Benzo b fluoranthene

Benzo[b]fluoranthene (BbF, CAS 205-99-2), benzo[k]fluoranthene (BkF, CAS 207-08-9), benzo[a]pyrene (BaP, CAS 50-32-8), indeno[1,2,3-cd]pyrene (IcdP, CAS 193-39-5), nitric acid (HNO₃, CAS 7697-37-2), hydrochloric acid (HCl, CAS 7647-01-0), hydrofluoric acid (HF, CAS 7664-39-3), and perchloric acid (HClO₄, CAS 7601-90-3) were purchased from Wako Pure Chemical Industries, Ltd. (Osaka, Japan). Fluoranthene (FR, CAS 206-44-0) and pyrene (PY, CAS 129-00-0) were obtained from Nacalai Tesque Inc. (Kyoto, Japan). Benz[a]anthracene (BaA, CAS 56-55-3), dibenz[a,h]anthracene (DahA, CAS 53-70-3), 1-nitropyrene (CAS 5522-43-0), and 2-acetylaminofluorene (CAS 53-96-3) were purchased from Tokyo Chemical Industry Co., Ltd. (Tokyo, Japan). Chrysene (CHR, CAS 218-01-9), benzo[ghi]perylene (BghiP, CAS 191-24-2), phenobarbital (CAS 50-06-6), and β-naphthoflavone (CAS 6051-87-2) were purchased from Sigma-Aldrich Co. LLC (St. Louis, MO, USA). Quartz filters were obtained from Pall Life Sciences (Port Washington, NY, USA).

Hexane, acetone, ethanol, and sodium sulfate (Wako Pure Chemicals Industries, Ltd., Japan) used for the analyses were of residual agricultural chemical grade. Water purified by a Millipore Direct-Q^® 3UV water purification system was washed with Hexane twice prior to use. Authentic PAH standards (phenanthrene [Phe], anthracene [Anth], fluoranthene [Flu], pyrene [Pyr], chrysene [Chry], benzo[b]fluoranthene [[b]flu], benzo[a]pyrene [[a]pyr], and perylene [Pery]), deuterated PAHs, and p-terphenyl-d₁₄ were purchased from Wako Pure Chemicals Industries, Ltd. (Japan). Deuterated surrogate standards were used to compensate for PAH losses during analysis.