黄河下游山东段沿岸土壤中重金属元素异常的成因

    Origin of heavy metal anomalies in soils along the Shandong reach of the lower Yellow River, China

    • 摘要: 山东省多目标区域地球化学调查发现,沿黄河两岸分布有As、Cd、Cr、Cu、Pb、Zn、Ni等重金属元素异常,这类异常衬度不大,并多沿河呈不连续分布。研究结果表明,异常区土壤重金属元素的含量与SiO2、Al2O3、Fe2O3等常量组分间具有显著的相关性,多数微量重金属元素随SiO2含量的增加而降低,随Al2O3、Fe2O3含量的增加而增加。根据常量组分与土壤质地的密切关系可以推断,土壤质地对重金属元素异常的形成具明显的控制作用。

       

      Abstract: Anomalies of heavy metal elements such as As, Cd, Cr, Cu, Pb, Zn and Ni have been found along both banks of the Yellow River during multi-target regional geochemical investigations in Shandong. These anomalies have low contrasts and are discontinuous along the river. Study indicates that the contents of heavy metals in soils of the anomaly area show significant correlation with major constituents such as SiO2, Al2O3 and Fe2O3. The contents of most trace heavy metal elements content decrease with increasing SiO2 content and increase with increasing Al2O3 and Fe2O3 contents. It may be inferred according to the close relation between the major components and soil texture that the soil texture has marked controlling effect on the formation of heavy metal element anomalies.

       

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