Abstract

The mobility of Cd, Co, Cu, Ni, and Zn in podzols and organic soils (Histosols) in the area of long-term pollution from the Monchegorsk copper–nickel plant (Murmansk oblast, Russia) has been assessed using the parameters of diffusion and convection–diffusion models. The found values of diffusion parameters match the data for other regions. In most cases, the convective flow of heavy metals is directed downwards and has a velocity of 0.126 to 0.31 cm/yr, or it does not differ from zero in a statistically significant manner. On the average, podzols and organic soils are similar in the diffusion parameters with regard to the total heavy metal content but differ in the velocity of convective transfer, which is much slower in organic soils. The model estimates for the inflow of heavy metal pollutants to soil do not depend on the distance from the plant, although a correlation with soil type is observable: an additional lateral influx of heavy metals to the surface most likely takes place in organic soils, associated with local depressions. An insufficient sample volume does not permit to assess the correlation of migration parameters with soil properties, while their correlation with chemical mobility (extraction with ammonium acetate buffer) appears as an insignificant trend.

中文翻译：

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Severonikel工厂附近（俄罗斯摩尔曼斯克州）附近重度污染土壤中的重金属迁移率

摘要

使用扩散参数评估了蒙切哥斯克铜镍厂（俄罗斯摩尔曼斯克州）长期污染地区的土壤中的镉，钴，铜，镍和锌的迁移率对流扩散模型。找到的扩散参数值与其他区域的数据匹配。在大多数情况下，重金属的对流朝下，速度为0.126至0.31 cm / yr，或者在统计学上不为零。平均而言，就总重金属含量而言，pod唑和有机土壤的扩散参数相似，但对流转移速度不同，这在有机土壤中要慢得多。该模型估算的重金属污染物向土壤的流入量并不取决于距植物的距离，尽管可以观察到与土壤类型的相关性：重金属向地表的额外横向流入最有可能发生在有机土壤中，并伴有局部凹陷。样品量不足，无法评估迁移参数与土壤特性的相关性，而它们与化学迁移率（用乙酸铵缓冲液萃取）的相关性却显得微不足道。