胡敏酸对土壤重金属移动性和植物有效性影响研究综述

Research Advances of the Influence of Humic Acid on Heavy Metal Mobility and Phytoavailability in Soil Environment

考察了近十几年来有关土壤环境中胡敏酸与重金属相互作用的研究报道,阐述了胡敏酸对土壤重金属化学形态、移动性以及氧化还原特性的研究进展,探讨了胡敏酸对土壤重金属植物有效性和植物毒性的影响机制.最后,在现有研究基础上提出了存在的问题和今后需要深入探究的重点.希望可以为研发重金属活化或钝化试剂、提高超积累植物的修复效率或降低农作物对重金属的吸收累积提供科学依据.

The research advances in heavy metal mobility, oxidation-reduction properties, and chemical species influenced by humic acid in soil environment are reviewed. The influence mechanism of bumic acid on metal phytoavailability and phytotoxicity are discussed. Last but not the least, some prospects in future work are proposed. Hopefully, all these work can help reduce metal uptake by crops by developing the metal immo- bilization reagent and promote washing remediation of metal contaminated soils by developing the environmental friendly eluant.