The red mud composite particles made up of red-mud (waste of alumina refinery) and phosphate were applied as remediation materials in Pb pollute soil. The leeks were planted for pot experiments and sampled at 1, 5, 10, 20 and 30d during the restoration. Through the five-step sequential extracting, the different phases of lead were extracted and determined. The growth of leeks was observed in 30 days and the content of lead in leeks were tested. The effect of remediation was evaluated by the increase of residue phase lead and the decrease of other phases. The promotion of chemical fixation and ...
