Fig. 2. Bioavailable Pb by physiologically based extraction test (PBET) for the (a) Joplin, (b) active repository (AR), and (c) time-critical repository (TCR) soil after four cuttings of sudax. Bioavailable Pb is expressed as a percentage of bioavailable Pb in the control sample. Means with the same letter within a phase are not significantly different at P < 0.05.

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