Assessment of radioactivity of cryoconites from glaciers of Elbrus mountain and glacial soils of Elbrus region, Russia

IF 3 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

International Journal of Environmental Science and Technology Pub Date : 2024-11-18 DOI:10.1007/s13762-024-06179-2

R. Tembotov, A. Gangapshev, A. Gezhaev, E. Abakumov

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Abstract

The paper presents data on radionuclide activity in cryoconites of Elbrus Mountain glaciers and periglacial soils. The study was conducted on the glaciers of the Elbrus Mountain—Maly Azau, Garabashi, Terskol and in the area of Prielbrusye, Kabardino-Balkarian Republic, Russia. Specific activity of natural radionuclides (K-40, U-235, U-238, Th-232) and cosmogenic Be-7 and technogenically orginated Cs-137 was determined. It was shown that activity of all investigated natural radionuclides in the samples taken on the studied glaciers is higher on Maly Azau, and cosmogenic Be-7 and technogenic Cs-137 at Garabashi. Revealed that cryoconites in the Arctic and Transcaucasia comparable to our data, and the Alpine glaciers have a higher specific activity natural radionuclides. The activity of cosmogenic radionuclide Be-7 in cryoconites of Elbrus glaciers was below the world average and amounted to 12.7–60 Bq/kg. In contrast to cryoconites from glaciers of other regions of the Earth, where very high concentrations of Cs-137 were found, in samples of cryoconites from glaciers studied by us this radionuclide showed relatively low values 0.44–68.2 Bq/kg. The data obtained in the study supplement the information on the geographical features of radioactive contamination of cryoconites of glaciers and periglacial soils mountainous areas.

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俄罗斯厄尔布鲁士山冰川和厄尔布鲁士地区冰川土壤中冰凝石的放射性评价

本文介绍了厄尔布鲁士山冰川和冰周土壤冰凝石中放射性核素活性的资料。这项研究是在厄尔布鲁士山脉-马利阿祖、加拉巴什、特尔斯科尔和俄罗斯卡巴尔达-巴尔干共和国Prielbrusye地区的冰川上进行的。测定了天然放射性核素（K-40, U-235, U-238, Th-232）和宇宙起源的Be-7和技术来源的Cs-137的比活度。结果表明，在所研究的冰川上采集的样品中，所有被调查的天然放射性核素的活性在Maly Azau和Garabashi的宇宙成因Be-7和技术成因Cs-137中较高。揭示了北极和外高加索的冰芯与我们的数据相当，而高山冰川具有较高的天然放射性核素比活度。厄尔布鲁士冰川冰芯中宇宙成因放射性核素Be-7的活度为12.7 ~ 60 Bq/kg，低于世界平均水平。在地球其他地区的冰川中发现了非常高浓度的铯-137，与此相反，在我们研究的冰川冰晶样品中，这种放射性核素的值相对较低，为0.44-68.2 Bq/kg。该研究获得的数据补充了关于冰川冰晶和冰川周围土壤山区放射性污染的地理特征的资料。

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来源期刊

International Journal of Environmental Science and Technology 环境科学-环境科学

CiteScore

5.60

自引率

6.50%

发文量

806

审稿时长

10.8 months

期刊介绍： International Journal of Environmental Science and Technology (IJEST) is an international scholarly refereed research journal which aims to promote the theory and practice of environmental science and technology, innovation, engineering and management. A broad outline of the journal''s scope includes: peer reviewed original research articles, case and technical reports, reviews and analyses papers, short communications and notes to the editor, in interdisciplinary information on the practice and status of research in environmental science and technology, both natural and man made. The main aspects of research areas include, but are not exclusive to; environmental chemistry and biology, environments pollution control and abatement technology, transport and fate of pollutants in the environment, concentrations and dispersion of wastes in air, water, and soil, point and non-point sources pollution, heavy metals and organic compounds in the environment, atmospheric pollutants and trace gases, solid and hazardous waste management; soil biodegradation and bioremediation of contaminated sites; environmental impact assessment, industrial ecology, ecological and human risk assessment; improved energy management and auditing efficiency and environmental standards and criteria.