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Title: Assessment of contamination of recent sediments of a large reservoir in the catchment of Arctic Ocean, Northern Europe

Affiliation:

Slukovskii, Zakhar : Institute of the North Industrial Ecology Problems of Kola Science Center of RAS, 14a Academgorodok Street, Apatity, 184209, Russia ; Slukovskii, Zakhar : Institute of Geology of Karelian Research Centre of RAS, 11, Pushkinskaya Street, Petrozavodsk, 185910, Russia ; Belkina, Natalia : Northern Water Problems Institute of Karelian Research Centre of RAS, 50, Alexander Nevsky Prospect, Petrozavodsk, 185030, Russia ; Potakhin, Maxim : Northern Water Problems Institute of Karelian Research Centre of RAS, 50, Alexander Nevsky Prospect, Petrozavodsk, 185030, Russia

Abstract:

The chemical composition of recent sediments of the Vygozero Reservoir, located in the North of Europe, in the Republic of Karelia (the catchment of Arctic Ocean), has been analysed. The level of enrichment and depletion of chemical elements, including trace elements, of the sediments relative to the Clarke numbers for the continental crust has been estimated. Elevated levels of Sb, Pb, Sn, Bi, W, Cu, and other metals in the sediments of the Vygozero Reservoir have been revealed in comparison with the concentrations of these metals in the background layers of the reservoir's sediments and their content in the sediments of small lakes of the south of the Republic of Karelia. It has been established that the main factor in the accumulation of these metals in the lake is the long-distance transport of pollutants from local man-made sources located in Karelia, and from sources in neighbouring regions. In the vicinity of the town of Segezha, elevated V and Ni contents were revealed in the cores of the studied sediments, which indicates the impact on the reservoir of emissions from the fuel-oil thermal power plant. Based on the calculation of the geoaccumulation index (Igeo) and pollution load index (PLI), the level of pollution of the Vygozero Reservoir in the study areas was estimated. It was found that the northern part of the waterbody, where the settlements Segezha and Nadvoitsy and industrial enterprises associated with these towns are located, are subject to the greatest load.

Identifier:

oai:journals.pan.pl:119360 ; DOI: 10.24425/ppr.2021.136511

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Last modified:

Feb 25, 2021

In our library since:

Feb 22, 2021

Number of object content hits:

32

All available object's versions:

https://journals.pan.pl/publication/136511

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Edition name Date
2 Feb 25, 2021

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