Assessment of Soils of Mining Regions for the Content of Heavy Metals (On the Example of Akmola Region and the Northern Part of Karaganda Region)

Abstract

The work is devoted to the assessment of soil pollution by heavy metals of the first hazard class in the territory of Akmola region and northern parts of the Karaganda region. In order to study the distribution of toxic elements in soils, we studied 20 soil samples taken in the Akmola and northern parts of the Karaganda region. We used atomic emission analysis, water extraction and analysis for the content of petroleum products. Atomic emission analysis made it possible to establish the presence of 29 elements in the soil of the object, two elements were revealed, lead and zinc, the content of which is close to or exceeds the MPC. The level of soil pollution was also determined by hazard and pollution indicators in the soils of the cities of Nur-Sultan and Karaganda by the content of five heavy metals: beryllium, lead, zinc, arsenic, cadmium. According to the ecological and geochemical survey of the Akmola and northern parts of the Karaganda region, it was found that the soils of these regions can be classified as relatively hazardous in terms of danger. Recommendations are given on reducing and preventing soil pollution with heavy metals