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Long-term geochemical monitoring of the soil cover in the impact zone of diamond mining enterprises: a case study in the Nakyn kimberlite field, Russia
Environmental Monitoring and Assessment ( IF 2.9 ) Pub Date : 2021-05-12 , DOI: 10.1007/s10661-021-09087-x
Yana B. Legostaeva , Anna G. Gololobova

The most severe disturbance of the earth’s surface occurs when the open-cut method of mineral deposits mining is used. The geoecological situation was assessed based on the nature of the soil cover based on the example of an industrial site of a diamond mining and processing plant located in the permafrost zone. During the period from 2007 to 2018, the soil cover of the industrial site is characterized by polyelement contamination. In the surface, soil horizons were an increase in the concentrations of mobile forms of Mn, Zn, Cd, Cr, Co, and Ni. It is identified that AO, ABcr, and CR are the accumulation horizons if the soil profile is preserved. Mobile forms Mn, Zn, Ni, Cr, Co, and As can migrate along with the soil profile to a depth of 40–50 cm depending on the amount of soil organic matter, the degree of its decomposition, and the scale of the cryoturbation. Research in 2018 allowed us to localize and confirm the increase in the area of contamination of the industrial site. Areas with an extremely dangerous category of soil cover contamination increased by 3 times compared to 2014. The results obtained are the basis for a more detailed study of the horizons of geochemical accumulation and the creation of artificial geochemical barriers with the development of technologies for the subsequent extraction of useful components.



中文翻译:

钻石开采企业影响区土壤覆盖物的长期地球化学监测:以俄罗斯纳金金伯利岩田为例

当使用矿藏的露天开采法时,对地球表面的干扰最严重。根据土壤覆盖物的性质评估了地球生态状况,并以位于永久冻土区的钻石开采和加工厂的工业现场为例。在2007年至2018年期间,工业现场的土壤覆盖以多元素污染为特征。在地表中,土壤层位中锰,锌,镉,铬,钴和镍的移动形式的浓度增加。如果保留了土壤剖面,则可以确定AO,ABcr和CR是累积层位。流动形式的Mn,Zn,Ni,Cr,Co和As可以随土壤剖面迁移至40–50 cm的深度,具体取决于土壤有机质的含量,其分解程度,和冷冻扰动的规模。2018年的研究使我们得以本地化并确认了工业现场污染面积的增加。与2014年相比,土壤覆盖污染极为危险的区域增加了3倍。获得的结果为更详细地研究地球化学积累的前景以及随着后续技术的发展而建立人为地球化学屏障提供了基础提取有用的成分。

更新日期:2021-05-13
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