水环境中腐殖质金属离子键合作用研究进展

摘要/Abstract

摘要： 腐殖质(主要指腐殖酸和富里酸)普遍存在于各种水体中,它对金属离子的形态、迁移转化、生物可利用性等地球化学行为起着重要作用。本文概述了水环境中腐殖质的一些基本性质,以及腐殖质金属离子之间的键合作用机理、研究方法和影响因素。并且对各种金属离子键合到腐殖质上的现代物理化学模型,尤其对ModelⅥ及NICA-Donnan模型进行了简要回顾和评述。它们在许多条件下模拟腐殖质-金属离子键合作用可以得到令人欣喜的结果。还简述了腐殖质对水环境中金属离子各种水环境地球化学行为的影响。但是,若要更深入了解和阐述金属离子在水环境中的各种行为,还需考虑腐殖质与颗粒物质、胶体物质以及微生物等的相互作用。

关键词: 凤丹, 重金属, 铜尾矿

Abstract: Humic substances are present in most of the surface and ground waters.They are important with respect to the chemical speciation,mobility,and bioavailability of trace metals.In this paper,we summarized the basic properties of humic substances (mainly humic acids and fulvic acids) and discussed the binding mechanism of proton and metal ions onto humic substances,which indicates the influential role of humic substances in controlling the environmental behaviors of metal ions in aquatic environmental systems.Short description of the developing history of modern physio-chemical models was given.Especially we recommended the lately emerged models: ModelⅥ and NICA-Donnan model.They showed encouraging success in modeling metal-humic interactions over a wide range of conditions.The effects of aquatic humic substances on the geochemical behaviors of metal ions in aquatic environments were also discussed.However,it was also suggested that if inorganic colloids or biota in aquatic environments are to be included in metal speciation and transportation codes,a full understanding of the ternary interactions of HSwith toxic metals and inorganic colloids or biota must be gained.

Key words: Paeonia ostii, Heavy metal, Copper-tailings

中图分类号:

X131

傅平青, 刘丛强, 吴丰昌. 水环境中腐殖质金属离子键合作用研究进展[J]. 生态学杂志, 2004, (6): 143-148.

FU Pingqing, LIU Congqiang, WU Fengchang. Binding of metal-ions with humic substances in aquatic environments: A review[J]. cje, 2004, (6): 143-148.

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