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Trace element fractions in sediments of urbanised lakes of the arctic zone of Russia

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Abstract

This paper presents the comprehensive evaluation of the level of accumulation of some of the most dangerous environmental pollutants (V, Co, Sn, Ni, Cr, Mn, Cd, Cu, Pb, Sb, Zn) and analyses their chemical forms in sediments of four small lakes located within Murmansk urban territory. Furthermore, the authors first studied morphology and chemical composition of industrial dust collected from the snow covering the ice of Lake Srednee. Fieldwork was carried out in April 2019. The results showed that sediments of the Murmansk urban lakes are significantly enriched in the content of the toxic metals and metalloids Cd, Pb, Sb, Zn, Cu, V, and Ni. An integrated assessment of anthropogenic impact using the pollution load index (PLI) and geoaccumulation index (Igeo) revealed a moderate to the extremely strong pollution level in recent sediment layers. The analysis of the fractions of the elements showed that they are mainly associated with stable compounds, such as primary minerals or persistent technogenic compounds (slag, matte, and dust). However, humic substances are a significant accumulative matrix for most studied elements. The share of the most mobile fractions does not exceed 30% for the vast majority of elements, even in the most polluted layers. The accumulation of the major part of pollutants can be attributed to the activities of the main industrial objects of the city (thermal power plant, coal port, transport infrastructure), and the impact of the global atmospheric transport of pollutants to the Arctic regions of Russia.

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The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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Acknowledgements

The authors sincerely thank their colleagues from Petrozavodsk and Apatity V.L. Utitsina, M. V. Ekhova, A. S. Paramonov, and A. A. Cherepanov for conducting high-quality analytical studies and sampling work.

Funding

This research is supported by the Russian Science Foundation project no. 19–77-10007—general assessment of pollution level of the studied lakes); the Russian Foundation for Basic Research project no. 18–05-00897—analyses of trace metal fractions); Governmental Order to the Institute of Limnology RAS St. Petersburg Federal Research Centre of the RAS (subject no. 0154–2019-0003 “Development of integrated methods for studying and evaluating the characteristics of solid particles at nanoscale size in water bodies with different levels of anthropogenic impact”) – laboratory sediment sample preparation, data analytical procedure.

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Correspondence to Alina Guzeva.

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Guzeva, A., Slukovskii, Z., Dauvalter, V. et al. Trace element fractions in sediments of urbanised lakes of the arctic zone of Russia. Environ Monit Assess 193, 378 (2021). https://doi.org/10.1007/s10661-021-09166-z

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  • DOI: https://doi.org/10.1007/s10661-021-09166-z

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