Assessment of degree of contamination of urban areas


  • І. V. Kuraeva M.P. Semenenko Institute of geochemistry, mineralogy and oreformation of the National Academy of sciences of Ukraine

Abstract

The article is devoted to comparison methods to assess the degree of contamination of urban areas and geochemical study of the peculiarities of distribution of heavy metals in soils that experience influence of chemical industry (Shostka example). This paper presents a detailed description of the natural environment of the study area, as well as man-made sources of soil contamination.To assess the degree of contamination of soil deposits Shostka were identified by their physico-chemical properties (pH, organic matter content, cation exchange capacity). Physico-chemical properties were determined by the method Arinushkina O.V. It is established that due aerogenic emissions of the chemical industry is reducing the pH of the surface layer of soil and organic matter content.To determine the total content of heavy metals such as Ni, Co, Cr, Cu, Pb, Ag, using atomic absorption method. As our research has shown gross concentration of heavy metals in the soils studied areas exceed background values tenfold. It was calculated coefficients concentrations of heavy metals in soils and highlighted technological geochemical association. The geochemical association of heavy metals in soils Shostka represented by such elements (humus horizon): Pb53> Ni16> Cr9> Co5> Ag4> Cu2. It compared two approaches to determine the total soil contamination Vodyanytsky J.N. and Sayet J.E. Given the density of the soil layers and indicator of total soil contamination lower in 4 times, than the figure calculated without the distribution of heavy metals throughout the soil profile.Studied the distribution patterns of total and mobile forms of heavy metals in soils.  The content of mobile forms of heavy metals is determined by the method of sequential extraction. The content of mobile forms of metals in the study area under the influence of the chemical industry increased compared to the background areas, which is an additional criterion for assessing soil sediment contamination.These studies are needed to address the theoretical issues of physical and chemical conditions of migration of heavy metals in the soil, and to solve practical problems urbogeochemistry.Keywords: heavy metals, chemicals, soil, the gross concentration of mobile forms, the total index of pollution 

Author Biography

І. V. Kuraeva, M.P. Semenenko Institute of geochemistry, mineralogy and oreformation of the National Academy of sciences of Ukraine
M.P. Semenenko Institute of geochemistry, mineralogy and oreformation of the National Academy of sciences of Ukraine

References

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Published
2016-06-11
How to Cite
KuraevaІ. (2016). Assessment of degree of contamination of urban areas. Journal of Geology, Geography and Geoecology, 24(1), 48-53. https://doi.org/https://doi.org/10.15421/111608