2) The concentrations of As, Cd and Pb in giant reed shoots were significantly increased when applying lower levels of AA, CA and sepiolite and high level of EDTA, respectively. Accumulations of As and Cd in plant significantly increased with the addition of 2.5 mmol/kg
AA and CA, 5.0 mmol/kg EDTA, and 4.0 g/kg sepiolite, and the shoot Pb accumulation was enhanced obviously by amending with 4.0 mg/kg sepiolite and 8.0 mg/kg phosphogysum, respectively as compared to the control. The results suggested that AA, CA and sepiolite could be considered optimum soil amendments for giant reed remediation system.