Magnetic particles in the sediments of the south Ukraine rivers as the marker of the technogenic impact on the hydroecosystems

Tetiana Alokhina,S Bourekkadi,O Omari,K Slimani,J Abouchabaka

doi:10.1051/e3sconf/202123400048

Tetiana Alokhina, S Bourekkadi + Show 3 more

Open Access

https://doi.org/10.1051/e3sconf/202123400048

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Abstract

Long-term and large-scale man-made activity in the mining areas affects to all components of the biosphere. The result of mining impact on hydroecosystems is addition to natural sources of sedimentary material technogenic components in large volumes. Magnetic particles are one of technogenic components which come with surface run-off to the river bed. We have studied the content of magnetic particles in the sediments of the south Ukraine rivers: the Inhulets River and the Inhul River ‒ the tributaries of the Dnieper and the Southern Buh, respectively. The Inhulets River flows along the Kryvyi Rih iron ore deposit, parallel the river there is a chain of open-pits, mines, mining and processing plants, a metallurgical plant. The results of our research were demonstrated within the Kryvyi Rih industrial agglomeration a number of magnetic particles in the sediment samples varies from 59,5% to 2,1%. Upstream from the Kryvyi Rih city on 10-15 km a number of magnetic particles is within 1,5%. Based on numerous sources of literature and own researches, it has been determined that detection of magnetic particles and properties is a convenient, cheap, quick and informative method of technogenic pollution studying of river sediments and also mirror the industrial history of the region.

Highlights

Rivers sediments, which are an element of the upper part of the section of the lithosphere and the lower part of the hydrosphere, carry information about the structure, composition, conditions of river valleys formation and catchment area.In the significant anthropogenic impact areas, such as industrial territories and, especially, mining centres, to natural sources of sedimentary material in large volumes are added man-made components which come with wastewater, surface run-off, by direct movement stored material to the river bed
The Inhulets River flows along the great Kryvyi Rih iron ore deposit in the meridional direction
The results of the content and distribution studies of magnetic particles in the Inhulets River are shown in the form of a diagram

Summary

Introduction

Rivers sediments, which are an element of the upper part of the section of the lithosphere and the lower part of the hydrosphere, carry information about the structure, composition, conditions of river valleys formation and catchment area. In the significant anthropogenic impact areas, such as industrial territories and, especially, mining centres, to natural sources of sedimentary material in large volumes are added man-made components which come with wastewater, surface run-off, by direct movement stored material to the river bed. The alluvial depositions in the man-made impact areas and downstream are a complex of particles of natural and unnatural origin [1, 2]. The composition of the bottom sediments reflects the ecological state of catchment areas and allows to reproduce the technogenesis process of the environment

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