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Дата издания
02.02.2025Область исследования
Тип исследования
Аннотация (краткое описание)
The study is devoted to the analysis of soil pollution in the West Kazakhstan region with heavy metals and hydrocarbons as a result of intensive activities of the oil and gas and mining industries. The main attention is paid to the determination of pollutant concentrations, their spatial distribution and the impact on ecosystems. It has been established that the region’s soils are long-term accumulators of man-made pollutants, including heavy metals (lead, cadmium, arsenic, chromium, nickel) and hydrocarbons. Key industrial zones of the region, such as Khromtau, Aktobe, Karachaganak field and oil refineries, have been selected as objects of study. Field and laboratory studies were carried out using generally accepted sampling methods (GOST 17.4.4.02-2017) and chemical analysis (atomic absorption spectrophotometry, X-ray fluorescence analysis). Geostatistical data analysis was carried out using GIS technologies (ArcGIS), which made it possible to create spatial maps of the distribution of pollutants. The results showed that the concentrations of heavy metals in the studied soils exceed the maximum permissible values (MPC). For example, near large industrial facilities, the concentration of chromium reaches 7333.6 mg/kg, nickel – 2213.1 mg/kg, and arsenic – 19 mg/kg. It has been revealed that soil pollution is accompanied by a deterioration of their physico-chemical characteristics, a decrease in fertility and a threat to ecosystems. The problem is aggravated by the migration of toxic substances into reservoirs and their accumulation in biota, which poses a danger to public health. Monitoring methods, including chemical, bioindication, and geostatistical approaches, as well as innovative soil purification technologies such as bioremediation and the use of nanotechnology, are proposed to minimize environmental damage. The results of the study are important for the development of state programs for the restoration of polluted lands, reducing anthropogenic pressure and ensuring sustainable development of the region.DOI
10.32014/2025.2518-170X.477Тип публикаций
Сведения о финансировании
This research has been funded by the Committee of Science of the Ministry of Science and Higher Education of the Republic of Kazakhstan (Grant No. BR21882122).Данный документ располагается в коллекциях
Международные публикации ученых SU
Scopus