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Environmental assessment of soils contaminated with heavy metals in the oil field areа of Zhanaozen | ||
| Caspian Journal of Environmental Sciences | ||
| دوره 23، شماره 5، اسفند 2025، صفحه 1111-1118 اصل مقاله (787.38 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22124/cjes.2025.9351 | ||
| نویسندگان | ||
| Gulmira Sarsenbayeva1؛ Gulzhanat Mukanova* 1؛ Tursunkul Bazarbaeva1؛ Batyrgeldy Shimshikov1؛ Kudaibergen Kyrgyzbay1؛ Aitu Oshakbay1؛ Serik Zhumatayev2؛ Svetlana Yerekeyeva3 | ||
| 1Al-Farabi Kazakh National University, Faculty of Geography and Environmental Sciences, UNESCO Chair for Sustainable Development, Almaty, Kazakhstan | ||
| 2K.I. Satbayev Kazakh National Research Technical University, Mining and Metallurgical Institute named after O.A. Baikonurov, Department of Surveying and Geodesy, Almaty, Kazakhstan | ||
| 3Uzbekali Zhanibekov South Kazakhstan Pedagogical University, Department of Geography, Shymkent, Kazakhstan | ||
| چکیده | ||
| The present work was performed with the aim of investigating heavy metal contamination of soils in the Zhanauzen oilfield, Kazakhstan. For this study, 20 soil samples were collected from industrial and residential areas around the oilfields and the concentrations of heavy metals lead, cadmium, nickel, and zinc were measured using atomic absorption spectrometry. The results of the laboratory analyses showed that the average lead concentration was 89 mg kg-1, and cadmium was 1.42 mg kg-1, which were 4.8 and 5.7 times higher than the natural background levels of the area, respectively. Calculation of pollution indices showed that 80% of the samples were in the moderate to highly polluted category. Based on the ecological risk index, cadmium was found to be the most critical metal due to a risk coefficient as high as 378 in some places. Samples S04 and S07 can be considered as those require urgent attention due to the highest levels of contamination. The strong correlation between the concentrations of lead, cadmium, and zinc (correlation coefficients above 0.9) indicates that the source of contamination is common. The outcomes of the present investigation indicate the significant impact of oil industry activities on soil pollution in the region and necessitate the implementation of continuous monitoring programs and management strategies to reduce pollution. | ||
| کلیدواژهها | ||
| Soil pollution؛ Heavy metals؛ Ecological risk assessment؛ Zhanauzen oilfield | ||
| مراجع | ||
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