ASSESSMENT OF THE ECOLOGICAL CONDITION OF THE SOIL COVER OF THE INDUSTRIAL AREA CONTAMINATED WITH HEAVY METALS (IN THE EXAMPLE OF THE KARAGANDY METALLURGICAL COMBINE)

Contamination of the soil of the industrial area with heavy metals is a serious environmental problem. In research soil samples were taken from the territory of the steel and mining company, which owns the largest metallurgical plant in Kazakhstan, "Karagandy Metallurgical Plant", located in the city of Temirtau, Karaganda region, Qarmet JSC, a metallurgical enterprise of Central Kazakhstan, and the content of heavy metals was determined using atomic absorption spectrophotometer (AAS) and X-ray fluorescence spectroscopy. Was determined. Eleven heavy metals were detected in the soil samples and the following heavy metals were found in the dissolved state: TiO2, MnO, and Fe2O3. It is known that the concentration of heavy metals Sr, Zn, Cr, and Cu in the soil samples is much higher. According to the research results, it was determined that the concentration of heavy metals increases in the order of Sr>Zn>Cr>Cu>V>Ni>Pb>As>Co>Cd>Hg. As a result of the comparison of the three samples №1, №2, №5 with the highest contamination level, the highest concentration of Strontium in the first sample is 287,1±0,05 mg/kg (р<0,05), the highest concentration of Zinc in the second sample is 132,2±0,05 mg/kg (р<0,05), high concentration of Chromium in the first sample is 137,2±0,05 mg/kg (р<0,05), Copper concentration was highest at the second point, amounting to 87,6±0,05 mg/kg (p<0,05). According to the results of the soil samples, it was found that the soil near the metallurgical plant is contaminated with strontium, zinc, chromium and copper.