3,4-Benzopyrene mixed with ferric oxide (1:1) 3,4-Benzopyrene mixed with hematite (1:1) Benzo(a)pyrene mixed with ferric oxide (1:1) Benzo(a)pyrene mixed with hematite (1:1) DJ6380200 Ferric oxide mixed with 3,4-benzopyrene (1:1) Ferric oxide mixed with benzo(a)pyrene (1:1) Hematite mixed with 3,4-benzopyrene (1:1) Hematite mixed with benzo(a)pyrene (1:1)