INFLUENCE OF WIND GENERATORS ON POLLUTION OF SOILS BY HEAVY METALS

Topicality. In the modern world, there are more and more ways to obtain any resources and this leads to certain consequences, which often cause environmental pollution. Today, wind generators are one of the ways to get energy, so the study of their impact on the environment, including the soil, is very relevant. Background. To study the degree of soil pollution with heavy metals on the territory of a wind farm located in Krasny Yar of the Ulyanovsk Region. Materials and methods. The work was based on the methods generally accepted in geochemistry and soil science (GOST 17.4.2.01-81, GOST 17.4.3.01-83, GOST 17.4.3.04-85, GOST 17.4.3.05-86) [1-4]. The determination of the concentration of heavy metals in soil samples was carried out at an atomic absorption spectrophotometer in the agrochemical center of Ulyanovsk. Evaluation of the results was carried out according to the «List of maximum permitted concentrations and maximum permissible concentrations of chemical substances in the soil» (№6229-91, 1991). Statistical analysis of the data was performed using standard methods and the MS Excel for Windows application package (2013). In all selected soil samples, atomic adsorption spectroscopy was used to determine the concentrations of the following heavy metals – Zn, Pb, Cu, Ni, Cd. Results. In the course of our research, adequate results were obtained, which are reflected in Table 1. From the obtained data, it was found that the Pb content is 8.1 mg / kg, at the edge of the Krasny Yar – 9.1 mg / kg, in the center of the Krasny Yar – 10 7 mg / kg. The general sanitary maximum permitted concentration (MPC) of Pb is 30 mg / kg. The research results show that there was no excess of the Pb background in Krasny Yar and at the wind farm. The presence of Cd was detected in all soil samples, the content of which does not exceed the MPC (1.0 mg / kg). Cu content is also within acceptable limits of concentrations. MPC Zn is 100 mg / kg of soil, the excess of this indicator was not detected in any of the sampling sites. The highest Ni content was found on the outskirts of the Krasny Yar, but the figure does not exceed the maximum permitted coefficient. Conclusion. Exceeding the maximum permitted concentrations of heavy metals has not been identified, therefore, thanks to the results obtained, it can be concluded that wind generators are completely safe for the soil and have minimal impact on the accumulation of heavy metals in it, which plays an important role in the ecology of the place chosen for the construction of a wind farm and nearby areas .