• 关键词：环境磁学  SO₂  重金属  代用指标  垂向分布  徐州钢铁厂

• 基金项目：江苏省"333"基金项目资助

• 王学松
• 淮海工学院, 化学工程系, 连云港 222005

• 秦勇
• 中国矿业大学, 资源与地球科学学院, 徐州 221008

• 摘要：对取自徐州钢铁厂附近的土壤样芯进行了比较系统的磁学测量和化学分析.结果表明,土壤样芯中Pb、Cu、Zn、Cd、Bi、Se、Hg、Fe、Mn的含量与磁学参数χ、SOFT、SIRM、χARM数值存在着十分相似的垂向变化特征,指示了土壤样芯中高浓度的磁性矿物和重金属是由外源输入引起的;样品中重金属元素含量与磁学参数呈显著相关.土壤样芯中元素S与磁学参数的相关性非常显著,表明土壤中的S与磁性矿物来源相同,但是,是否可以利用土壤的磁学参数作为预测大气中SO₂污染程度的代用指标仍需进一步探讨.土壤中铁锰氧化物结合态在一定程度上控制了土壤中Pb、Cu、Zn、Cd、Bi、Se、Hg等重金属元素的生物地球化学循环.

• Abstract：Concentrations of Pb,Cu,Zn,Cd,Se,Fe,Mn,Hg and magnetic parameters' values(χ,χ_ARM,SOFT,SIRM)were measured on a soil core collected near Xuzhou iron-steel plant.Since vertical variations of magnetic parameters are in good agreement with that of concentrations of heavy metals,anthropogenic contamination origin is thought to be the cause.Significant correlations are observed between magnetic parameters(χ,χ_ARM,SOFT,SIRM)and heavy metals at varying depth.That there is a very significant correlation between magnetic parameters and elevated concentrations of element Sindicates there is a similar source between these magnetic minerals and S.Whether the concentrations of SO₂ can be conjectured by determining these corresponding magnetic parameters' values is still discussed further.The biogeochemical cycle of Pb,Cu,Zn,Cd,Se,Fe,Mn and Hg in the soils is associated with the concentrations of Fe-Mn oxides to some extent.

• Key words：environmental magnetism  SO₂  heavy metals  proxy  vertical distribution  Xuzhou Iron-Steel Plant

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