FIG. 2.

Cumulative amount of ¹⁴CO₂ evolved from [7-¹⁴C]benzo[a]pyrene (10 mg/liter) by a bacterial consortium grown on a range of diesel fuel concentrations or on Inipol EAP-22. The concentrations of diesel fuel used were 0.007% (wt/vol) (■), 0.05% (wt/vol) (●), 0.1% (wt/vol) (▴), and 0.2% (wt/vol) (⧫). ▾, no diesel fuel; □, Inipol EAP-22. Each point represents the average value obtained with triplicate flasks, and the error bars indicate the standard deviations (omitted when they were smaller than the symbol).