oa Monitoring of Soils’ Geochemical Pollution Near TPP Ash Dumps

The paper considers the environmental impact of TPP (Thermal Power Station) ash dumps on the soils of the surrounding areas. The paper provides an assessment of the man-made impact of TPP ash dumps on the geochemical state (pollution) of soils in the area of their location. For assess the possible man-made impact, the following were determined: features of the economic use of the adjacent territories; landscape-geochemical features of modern soil cover formation; planning of a network of soil condition observations.

Geochemical studies of soils were carried out annually from 2006 to 2022. Soil research was carried out within the 300-meter sanitary and protective zone the ash dump along 6 profiles.

According to the profile, soil sampling was carried out at a distance of 50, 150 and 300 m from the border of the ash dump. Samples were taken from the upper 0–5 cm homogeneous soil’s layer with a special ring. Total weight of sample is 0.5 kg.

The selected samples were analyzed by approximate quantitative spectral analysis for 34 elements and quantitative analyzes for the content of S, F and Sr.

Geochemical studies of soils in background areas were also performed using a similar methodology.