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Elizareva E.N., Yanbaev Y.A., Redkina N.N., Kudashkina N.V., Baykov A.G. ASSESSMENT OF SOIL POLLUTION IN THE ZONE OF INFLUENCE OF METALLURGICAL ENTERPRISESThe total contents of heavy metals in soils selected in the zone of influence of Karabashmed CJSC, Satkinsky Iron-smelting Plant JSC and Uchalinsky Ore Mining and Processing Plant OJSC were analyzed. The excess of the standards for all metals except manganese has been established. The phytoremediation method — accumulation of heavy metals from soil by plants was tested on the investigated soils. It is shown that after growing plants in the soils, the content of iron, zinc and copper decreased. Assessment of soil contamination degree using the concentration coefficient showed that in the studied soils before planting the total amount of most metals is within the limits of natural fluctuation. A weak level of soil contamination with cadmium has been established (Uchaly), moderate contamination with copper (Uchaly) and zinc (Karabash), heavy pollution with cadmium and copper (Karabash). As a result of the use of phytoremediation technology, the concentration coefficients for iron, zinc and copper have significantly decreased. And according to the content of copper, Uchalv’s soil passed from the category of moderate pollution to the category of low pollution. To estimate the multielement influence the levels of heavy metal contamination were calculated using the Saet’s index and the index proposed by Yu.N. Vodyanitsky, taking into account the different toxicity of heavy elements and based on the average geometric parameters. It is shown that the use of phytoremediation technology decreases the level of total contamination of soils with heavy metals.Key words: heavy metals, soil, toxicity, total chemical contamination, phytoremediation.
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About this article
Authors: Elizaryeva E.N., Yanbaev Yu.A., Redkina N.N., Kudashkina N.V., Baykov A.G.
Year: 2017
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Editor-in-chief |
Sergey Aleksandrovich MIROSHNIKOV |
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