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Fig. 4. Changes in the concentrations of Se4+, Se2–, and accumulated Se during incubation after addition of Se6+ to the coal mine tailings pond sediment. (
) Sterilized sediment (heat-killed) inoculated with Enterobacter hormaechei; (•) Nonsterilized sediment (live) inoculated with Enterobacter hormaechei; (
) Nonsterilized sediment (live) without any inoculation; (*) Sterilized sediment (heat-killed) without any inoculation (control). Error bars (±) represent standard error of the mean (n = 3).
