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Pb leached from soil contaminated with smelter Pb (SM-soil) with and without flue gas desulfurization gypsum (FGDG) amendment as a percentage of the total Pb in soil (65,123 mg/kg) in in-vitro bioaccessibility assay (IVBA) at pH 1.5 and 2.5. Error bars represent the standard deviation of three replicate samples.
