Abstract
Introduction. The operation of the Teghut copper-molybdenum enterprise resulted in the man-made load on the environments in terms of concentrations of some heavy metals (autumn 2016), the migration of which continued even after the plant shutdown (autumn 2018). Methods. The authors studied changes in the concentrations of Mo, Zn, and Cu in samples of Shnogh River water and coastal soils near the tailing storage facility territory. Results. During enterprise operation, in water sampling points 1 and 2, a decrease in the concentrations of these heavy metals after the plant shutdown was noted. According to the analysis of coastal soil samples, in points 1 and 2, after the plant shutdown, the Zn concentration decreased by 75% and the Cu concentration decreased by 84% compared with the analysis of samples during enterprise operation. In samples of coastal soils from sampling points 3 and 4, a concentration reverse was observed. Conclusion. The calculation of the geo-accumulation coefficient for the studied heavy metals in soil sampling points 1 and 2 compared to sampling points 3 and 4 indicates a decrease in the man-made load on the environment, caused by plant operation.
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