Assessment of the Level of Pollution of the Aquatic Ecosystem of Lake Markakol with Mobile Forms of Copper and Zinc
Madibekov A. Ismukhanova L. Zhadi A. Sultanbekova B. Zhumatayev S. Madibekova A.
September 2024Joint Journal of Novel Carbon Resource Sciences and Green Asia Strategy
Evergreen
2024#11Issue 31568 - 1579 pp.
The purpose of the study is to conduct toxicological analysis to assess the degree of accumulation of heavy metals and micro- and macroplastic particles in the aquatic environment of the lake in the system “water-bottom sediments”. The method of spectrometric atomic absorption analysis was used during the study. Detection of high concentrations of copper (Cu) and zinc (Zn) in the surface layer up to 1.5 and 1.3 times, in the bottom layer up to 1.3 and 1.4 times, respectively, indicated exceeding the norms of maximum permissible concentrations for fishery purposes. High values of metals in the surface water layer were registered in deep-water areas of the lake Markakol, and in the bottom layer, high values are concentrated in shallow areas and in the river confluence zones. High Cu concentrations were recorded in shallow areas of the lake, at depths from 2.7 m – 10.2 mg/kg to 4.7 m – 8.9 mg/kg, 7.9 m – 12.3 mg/kg. Cu values in deep water bottom sediments were much lower, at 20.4 m – 2.8 mg/kg, 21.1 m – 2.6 mg/kg, 21.6 m – 6.6 mg/kg. A similar distribution pattern in bottom sediments was observed for Zn. High concentrations of Zn were recorded in shallow areas, from 154 mg/kg at 2.7 m depth, to 439 mg/kg – 4.6 m, this may be due to an increase in the proportion of their bioavailable forms in the water column, which would be harmful to all hydrobionts. The results of the study can be used in practice by ecologists in order to develop and implement measures to improve the ecological state of the ecosystem of Lake Markakol.
anthropogenic load , concentration , heavy metals , macroplastics , microplastics , migration
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Department of Hydrochemistry and Environmental Toxicology, Institute of Geography and Water Security, Almaty, Kazakhstan
Faculty of Water, Land and Forest Resources, Kazakh National Agrarian Research University, Almaty, Kazakhstan
Faculty of Geography and Environmental Sciences, Al-Farabi Kazakh National University, Almaty, Kazakhstan
Department of Hydrochemistry and Environmental Toxicology
Faculty of Water
Faculty of Geography and Environmental Sciences
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