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    环境磁学在重金属污染研究中的应用

    Application of Environmental Magnetism in the Study of Heavy Metal Pollution

    • 摘要: 20世纪60年代以来,环境磁学以快速、灵敏、经济、无破坏性和信息量大等特点被广泛应用到环境污染研究中。笔者介绍了环境磁学应用于重金属污染监测的基本原理和优势,系统综述了其在大气,水体(湖泊、河流和海岸等)和土壤等环境重金属污染监测中的主要成果和最新进展,包括磁学参数可作为重金属污染物质代用指标,以及环境磁学在重金属污染分布特点和污染程度鉴定、重金属污染历史重建、重金属污染物运移追踪等方面的应用。提出了重金属污染磁性诊断研究还需要解决的问题,包括磁学参数多解性,其他环境过程(动力分选、吸附解吸和早期成岩等)的干扰和影响,磁性矿物与重金属物质赋存关系及多学科交叉研究等。

       

      Abstract: Since 1960s, environmental magnetism methods have been widely applied to environmental pollution studies due to its advantages of rapid,sensitive,economical,non-destructive and large amount of information.The basic principles and advances of environmental magnetism applied to heavy metal pollution detection are introduced in this paper. Then, the main achievements and latest applications in the detection of heavy metal pollution in atmosphere,water (lacustrine,river and coastal,etc), soil and other environments are reviewed,including magnetic properties as a proxy for heavy metal concentrations, tracing pollutant transport and dispersal,detecting the heavy metal pollution distribution characteristics and pollution degree,reestablishing heavy metal pollution history, etc. Finally,pointing out that the possible linkage between magnetic minerals and heavy metals is very complex and some key issues need to be resolved,such as the ambiguity of magnetic parameters,interference and influence of other processes (sorting,sorption,desorption and post-depositional diagenesis, etc), relationship between magnetic minerals and heavy metals,interdisciplinary research,etc.

       

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