Bioavailability of zinc, cadmium, and lead in a metal-contaminated alluvial soil

Metal mining activities can cause a variety of soil contamination problems including the deposition of sediments having high concentrations of heavy metals on alluvial soils. This study was conducted to investigate the effects of various soil amendments or combinations of amendments on Zn, Cd, and Pb bioavailability in a metal-contaminated alluvial soil as indicated by a chemical fractionation procedure and soybean [Glycine max (L) Merr.] growth and heavy metal composition. Total soil concentrations were 1165 mg/kg for Zn, 11 mg/kg for Cd, and 110 mg/kg for Pb, and evidence suggested that Zn phytoxicity was limiting soybean growth [...]