Authors: E.V. Zhuravleva, V.A. Krasilova, N.V. Zhuravleva

Title of the article: Determination of the polycyclic aromatic hydrocarbons concentration in coal dust produced at coal transportation and processing enterprises

Year: 2022, Issue: 4, Pages: 43-51

Branch of knowledge: 05.17.07 Chemical technology of fuel and high-energy substances

Index UDK: 622.411.5:622.33

DOI: 10.26730/1999-4125-2022-4-43-51

Abstract: The formation of coal dust during transportation and processing of coal leads to significant environmental pollution. Coal and coal dust are considered in foreign studies aimed at studying the problems of environmental safety as a potential source of toxic microelements and PAHs entering the aquatic environment. This work contains the results of the determination of PAHs and the granulometric composition of coal dust formed at the coal transshipment enterprise. Carcinogenic compounds of the PAHs class, including naphthalene and benz(a)pyrene, normalized in the Russian Federation, were identified and quantified in the dust samples studied by GC-MS method. The content of ∑14 PAHs in the studied samples of coal dust ranges from 41.37 to 119.48 mg/kg. It has been established by laser diffraction that the content of the most dangerous particles in terms of air pollution (PM10 and PM2.5) is more than 30% in the presented samples. It should be taken into account that coal transshipment enterprises are a source of fine particles containing carcinogenic compounds of the PAHs class entering the environment. The developed industrial environmental control programs at these enterprises should include the determination of PM2.5 and PM10 particles, as well as the content of representatives of the PAHs class compounds.

Key words: coal transshipment coal dust suspended particles PM10 and PM25 in atmospheric air polycyclic aromatic hydrocarbons PAHs laser granulometry gas chromatography-mass spectrometry carcinogenicity

Receiving date: 11.08.2022

Approval date: 30.08.2022

Publication date: 06.10.2022

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