Biogeochemical Assessment of Toxicity and Radioecological Danger of the Transboundary Kara-Balta River

IF 0.7 4区地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS Geochemistry International Pub Date : 2023-11-15 DOI:10.1134/S0016702923100038

B. M. Djenbaev, V. P. Solodukhin, B. K. Kaldybaev, B. T. Zholboldiev, S. G. Lennik, M. A. Severinenko, W. J. Karmysheva

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Abstract—The paper presents the results of researches of the concentration of chemical elements and natural radionuclide in the environmental objects of the Kara-Balta transboundary river basin (adjacent territories of Kyrgyzstan and Kazakhstan). The level of contamination of floodplain soils and bottom sediments of the Kara-Balta River with such chemical elements as U, Sb, As, Th, Pb, Sc, Co, Cu, Mo, Zn, V, Sr, Ba, Cs was established. Based on the calculated indicators of the contamination factor (CF), enrichment factor (EF), and index of geoaccumulation (Igeo), it was found that Sb, As and Br make the largest contribution to soil and bottom sediment pollution in the Kara-Balta water basin. At three checkpoints, an increased concentrations of U, B, Li, Sr, Mo were found in the water samples of the region’s reservoirs, which is related to the influence of the tailings of the Kara-Balta mining plant. The elevated concentrations of As, B, Ba, Co, Mn, Sb, V, and Zn were also established around the mouth of the Kara-Balta River, which flows into the Tasotkel reservoir (Kazakhstan). The results of the research can be explained by the fact that a significant part of the Kara-Balta transboundary river basin is located in the zone of a uranium natural–technogenic province.

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跨界卡拉-巴尔塔河毒性和放射生态危险的生物地球化学评价

摘要:本文介绍了卡拉-巴尔塔跨界河流域(吉尔吉斯斯坦和哈萨克斯坦相邻地区)环境物中化学元素和天然放射性核素浓度的研究结果。建立了卡拉-巴尔塔河河漫滩土壤和底泥中U、Sb、as、Th、Pb、Sc、Co、Cu、Mo、Zn、V、Sr、Ba、Cs等化学元素的污染水平。通过计算污染因子(CF)、富集因子(EF)和地质堆积指数(Igeo)，发现Sb、As和Br对卡拉-巴尔塔流域土壤和底泥污染的贡献最大。在三个检查站，发现该地区水库水样中铀、硼、锂、锶和钼的浓度增加，这与卡拉-巴尔塔采矿厂尾矿的影响有关。As、B、Ba、Co、Mn、Sb、V和Zn的浓度也在流入Tasotkel水库(哈萨克斯坦)的Kara-Balta河河口附近出现升高。研究结果可以用卡拉-巴尔塔跨界河流域的很大一部分位于铀自然技术省的带来解释。

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来源期刊

Geochemistry International 地学-地球化学与地球物理

CiteScore

1.60

自引率

12.50%

发文量

审稿时长

1 months

期刊介绍： Geochemistry International is a peer reviewed journal that publishes articles on cosmochemistry; geochemistry of magmatic, metamorphic, hydrothermal, and sedimentary processes; isotope geochemistry; organic geochemistry; applied geochemistry; and chemistry of the environment. Geochemistry International provides readers with a unique opportunity to refine their understanding of the geology of the vast territory of the Eurasian continent. The journal welcomes manuscripts from all countries in the English or Russian language.