№61-09

Analysis of air pollutants chemical transformation in the atmosphere of urban and industrial territories

O. Kovrov¹, V. Omelchenko¹, A. Kozachenko¹

¹Dnipro University of Technology, Dnipro, Ukraine

Coll.res.pap.nat.min.univ. 2020, 61:103-115

https://doi.org/10.33271/crpnmu/61.103

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ABSTRACT

Purpose. The paper summarizes the results of modern research on the mechanisms of chemical transformation of air pollutants emitted into the atmosphere when burning coal and other hydrocarbons.

The research methodology is based on the generalization of up-to-date knowledge in the field of atmospheric chemistry and theoretical analysis of the mechanisms of chemical transformation of gaseous pollutants to final decay products.

Findings. The analysis of typical atmospheric pollution in coal mining regions, as well as large cities by the example of classical and photochemical smog, focuses on chemical transformations of major air pollutants, including nitrogen oxides, sulfur oxides, unsaturated hydrocarbon compounds and peroxide radicals. A parallel between day and night chemical atmospheric reactions with a focus on secondary and final products of atmospheric chemical reactions is made. It allows better understand the essence of atmospheric chemical reactions due to man-made emissions, analyze their priority and assess potential impact within the atmosphere surface layer and biological systems.

Originality. A generalized scheme of chemical transformations for the main gaseous pollutants of the atmosphere into secondary or final compounds, in particular nitrogen compounds, sulfur oxides and hydrocarbons, is presented. This mechanism gives an understanding of the chemical composition of the atmosphere surface layer in urban regions and industrial territories during the day and night, which allows manage the risks of environmental pollution.

Practical implications. The results of theoretical research serve as a theoretical basis for a comprehensive assessment of environmental impact, identification of potential risks of dangerous situations associated with excessive air pollution. It allows justify effective measures to prevent air pollution in industrial and urban regions taking into account natural and climatic features.

Keywords: atmospheric pollution, photochemical smog, nitrogen oxides, peroxide radicals, peroxyacetylnitrate, ozone, nitric acid.

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