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Pyrene concentration dynamics in soil during the incubation period. The designations Pyr-5, Pyr-30, and Pyr-70 indicate that the soil was treated with different concentrations of pyrene representing 5, 30, and 70 mg ⋅ kg-1 d.w.s., respectively. The designation d.w.s. refers to dry weight soil. The error bars represent the standard deviation of the means of triplicate microcosms.
