Comparative analysis of soil pollution oil products of industrial and landscape-recreational zones of the city of Usolye-Sibirskoe using the fluorimetry method

Abstract

The purpose of the work is to compare soil pollution with oil products on the territory of industrial and landscape-recreational zones of the city of Usolye-Sibirskoye using the fluorometry method. The content of oil products in the samples of the four upper layers of soils taken from the production area of the chemically contaminated city of Usolye-Sibirskoye and from its landscape and recreational zone was determined. Although the maximum permissible concentration of oil products in the soils of these zones has not been established, it is known that the mass fraction of oil products in uncontaminated soils should not exceed 0.1%. The obtained results of fluorimetric analysis of soils from two practically diametrically opposite areas of the city in terms of pollution made us think and conduct a deeper analysis, taking into account the wind rose of the city and adjacent territories and the sufficiency of the fluorimetry method performed using the Fluorat-0.2 luminescent photometric analyzer. Using the results of the analysis of soil samples from the territories of "Usolekhim-prom" and "Ski base" in Usolye-Sibirskoye, it was revealed that the mass fractions of oil products exceed the indicators for all four upper soil layers in the case of focusing on the principles of rationing, which today are not legally established. The results of the study showed that the highest content of oil products in both cases is in the layer of forest litter. Based on the fact that the activities of Usolekhimprom have been completely stopped since 2017, and pollution with oil products exceeding the approximate standard values was found only in the uppermost layer of the soil, it was suggested that the main cause of soil pollution with oil products in the territory of the city of Usolye - Sibirskoye is, basically, the current largest enterprise in Eastern Siberia for the production of petroleum products and petrochemistry - JSC Angarsk Petrochemical Company, and this is annually confirmed by statistics.