CONTENT OF HEAVY METALS IN THE SNOW COVER OF THE EASTERN INDUSTRIAL ZONE OF PAVLODAR

Abstract

This article analyzes the content of heavy metals in the snow cover of the industrial areas of the city of Pavlodar, which made it possible to identify the presence of the problem of environmental pollution. Data on the content of various elements in snow by hazard class were analyzed: in the first hazard class, Zn has the highest content, on average 187.5 mg/kg, the greatest variation in the content of elements is observed in Cd – the coefficient of variation is 118.5%, a high concentration coefficient for Pb and Zn; in the second class – Cr has the highest content, on average 259.1 mg/kg, the greatest variation is observed in Cu – the coefficient of variation is 92%, the concentration coefficient is high in Cr; in the third class – Ba has the highest content, on average 777.5 mg/kg, the coefficient of variation and concentration of Mn. Studies have shown that the content of heavy metals in the snow increases in the northeast direction from the industrial enterprises of the eastern industrial zone of Pavlodar. According to calculations, the content of all heavy metals of the first hazard class in the snow exceeds the maximum permissible concentration (MPC) of soils. The content of cadmium exceeds the maximum permissible concentration by more than 17 times. Heavy metals of the second hazard class are in the range of 0.4–3.2 times the MPC. Strontium exceeds MPC by 25 times. The analysis carried out is an important step in understanding the ecological situation in Pavlodar and can be useful for taking measures to protect the environment and improve the ecological situation in this area.