Status and Migration Activity of Lead, Cobalt and Nickel in Water and in Bottom Sediments of Lake Markakol, Kazakhstan
Ismukhanova L. Madibekov A. Opp C. Zhadi A. Sultanbekova B. Zhumatayev S.
September 2024Multidisciplinary Digital Publishing Institute (MDPI)
Applied Sciences (Switzerland)
2024#14Issue 17
Lake Markakol is located in a metal-rich mountain area of Kazakhstan. Metal input into the lake water and in the bottom sediments can be expected. Lead, cobalt and nickel monitoring in both near-surface and deep-water layers and in bottom sediments was carried out using flame atomic absorption spectrometric analyses. Lead contamination of surface water ranging from 2.6 to 6.8 µg/L occurs in all water samples with the exception of the surface water layer. In the deep-water section concentrations reach up to 13.0–16.2 µg/L. Cobalt concentrations range from 36.8 to 67.5 µg/L in the surface layer and from 25.5 to 69.2 µg/L in the deep-water layer. High values of nickel were found in the surface and bottom layers of the water, ranging from 13.5 to 49.0 and 17.2 to 49.0 µg/L, respectively. High concentrations of lead, cobalt and nickel were identified in all samples of the bottom sediments. The lead content in bottom sediments reaches 11.3, cobalt reaches 10.3–18.0 and nickel reaches 15.0 mg kg−1. The results and their assessment can serve as a basis for future monitoring and measures to reduce pollution, restore the lake ecosystem and ensure the safety of fishery products for humans.
bottom sediment , heavy metal concentration , mountain lake , pollution , water layers
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Laboratory of “Hydrochemistry and Environmental Toxicology”, JSC “Institute of Geography and Water Security”, Almaty, 050010, Kazakhstan
Department of Meteorology and Hydrology, Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Faculty of Geography, Philipps-Universität Marburg, Marburg, D-35032, Germany
Water, Land and Forest Resources Faculty, Department Water Resources and Reclamation, Kazakh National Agrarian Research University, Almaty, 050013, Kazakhstan
Department of Surveying and Geodesy, Mining and Metallurgical Institute, Kazakh National Research Technical University Named after K.I. Satpayev, Almaty, 050000, Kazakhstan
Laboratory of “Hydrochemistry and Environmental Toxicology”
Department of Meteorology and Hydrology
Faculty of Geography
Water
Department of Surveying and Geodesy
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