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Fig. 7. Loss of Cr(VI) in the incubation experiment with 100 mL of degassed Hoagland solution with 5 mM Na acetate and 2.0 mg L–1 Cr(VI): A = solution only; B = autoclaved solution only; C = solution with 4 g of sediment samples (10–12 cm) from the Typha latifolia microcosm; D = same as C but autoclaved; E = solution with 4 g of sediment samples (10–12 cm) from the Phragmites australis microcosm that received 2 mM acetate from the nutrient solution; and F = same as E but autoclaved. Error bars are smaller than symbols.
