Factors needed to be re-considered during in-situ remediation practices of Pb-polluted soils with P
利用磷进行铅污染土壤原位修复中需考虑的几个问题

The presence of phosphorus (P) and lead (Pb) in soil can lead to the formation of highly insoluble minerals of Pb5(PO4)3X (where X can be Cl?, OH?, F?, etc.). Hence low-cost phosphate-containing materials utilization was proposed as the best management practice (BMP) for remediation of Pb-polluted soils. Current studies involving in-situ remediation of Pb-polluted soils via phosphorus-compounds are reviewed in this paper. Key factors controlling pyromorphite formation kinetic, solution optimal pH and P/Pb molarity ratio, etc. are discussed in detail. Meanwhile, prospective studies are also discussed with the view to providing further information on remediation practices and their efficiencies in dealing with Pb-polluted soils.