
Keywords: HCH; hexachlorocyclohexane; γ-HCH; lindane; DNAPL; dense non-aqueous phase liquid; AWCD; average well color development; EROD; ethoxyresorufin-O-deethylase; BFCOD; benzyloxy-4-[trifluoromethyl]-coumarin-O-debenzyloxylase; PCBs; polychlorinated biphenyls;