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Concentration (ppb) of alkanes (a) and alkenes (b) identified in Raw- (black bars), Unstarted- (blue bars), and Started-BCP (red bars). Data are the means (± SD) of three independent experiments analyzed in triplicate. Data were subjected to one-way ANOVA; pair-comparisons of treatment means was achieved by Tukey’s procedure at p < 0.05. For each compound, bars with different superscript letters differ significantly (p < 0.05).
