Natural radionuclides and toxic elements in transboundary rivers of Kazakhstan

Solodukhin, V. P.; Poznyak, V. L.; Kabirova, G. M.; Stepanov, V. M.; Ryazanova, L. A.; Ленник, С. Г.; Liventsova, A. S.; Bychenko, A. N.; Zheltov, Dmitriy A.

doi:10.1093/rpd/ncv322

Cited by 10 publications

(3 citation statements)

References 2 publications

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“…The study of water quality in such areas is important for ensuring food security because water pollution can lead to the contamination of plant products and affect human health [16,17]. A number of studies [18][19][20][21][22][23] have been published based on the results of the governmental monitoring of the main transboundary rivers in Kazakhstan. These publications have highlighted the problems of pollution with hazardous elements of soils and bottom sediments of the main transboundary rivers between Kyrgyzstan and Kazakhstan.…”

Section: Introductionmentioning

confidence: 99%

Occurrence of Radionuclides and Hazardous Elements in the Transboundary River Basin Kyrgyzstan–Kazakhstan

Severinenko

Solodukhin

Djenbaev

et al. 2023

Water

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Important for irrigation, the transboundary river basin between Kyrgyzstan and Kazakhstan is vulnerable to geochemical and anthropogenic sources of pollution. The use of water use indices, together with measurements of the elemental and radionuclide composition of the water and bottom sediments, provides a means for evaluating the continued use of the water from this region. Recent monitoring shows the highest concentrations of hazardous contaminants include lead and thorium contained in the bottom and banks of the Kichi-Kemin River. These contaminants are likely remnants of an accidental spill at the Aktyuz tailing dump in 1964. The specific activity of the Th-232 of the bottom and banks of the Kichi-Kemin River is 107–189 Bq/kg. There is evidence of anthropogenic sources of additional pollution from uranium in both the bottom sediments and the water in the Oyrandy River. The geochemical origins of uranium and other associated elements in the water of the Shu River are likely the Kamyshanovskoye deposit. Contact between the riverbed and ore bodies in this region likely leads to elevated concentrations of several geogenic contaminants, including lithium, strontium, uranium, and boron (Li, Sr, U, B), increasing by as much as 60–130%. The uranium concentrations in the water of channels that are used for irrigation exceed the maximum allowable contaminant levels by 3.8 times. Future work is needed to evaluate the ecological and human health impacts of these contaminants in irrigation and drinking water.

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Section: Introductionmentioning

confidence: 99%

Occurrence of Radionuclides and Hazardous Elements in the Transboundary River Basin Kyrgyzstan–Kazakhstan

Severinenko

Solodukhin

Djenbaev

et al. 2023

Water

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“…Therefore, the mining industry and its associated processing industries have become potential threats to water quality guarantees and water resource security in Central Asia. At present, some scholars have analyzed the arsenic or fluorine concentrations in some rivers of Kyrgyzstan, such as the Shu River, Shor-Koo River, and Aksu River 13 , surface water in Mailuu Suu town 14,15 and the Naryn River 16 .…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Distributions of Fluorine and Arsenic in Rivers With the Role of Mining Industry and Related Human Health Risk Assessments in Kyrgyzstan

Abuduwaili

et al. 2021

Preprint

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To determine the spatiotemporal distributions and human health risks of fluoride and arsenic in the rivers of Kyrgyzstan as influenced by mining and other industries, 169 water samples were collected from the main rivers and tributaries of Kyrgyzstan from 2016 to 2018. Through the use of cold and hot spot analysis, multivariate statistical analysis and health risk assessment model, the results indicated that the fluorine and arsenic concentrations in river waters increased year by year from 2016 to 2018. In total, 2.38%, 3.26% and 10.64% of the analyzed samples exceeded the drinking water standard of a maximum permissible limit of 1 mg/L for fluoride, and 0%, 1.09% and 2.13% of the samples exceeded the limit of 10 µg/L for arsenic in 2016, 2017 and 2018, respectively. The gathering areas for high fluorine concentrations were mainly distributed in the Issyk-Kul Basin, Chu River Valley and Fergana Basin, and the gathering areas for high arsenic concentrations were mainly concentrated in the Chu River Valley and southern Fergana Basin. Although fluorine and arsenic were not found to exceed the limits simultaneously, the two pollutants accumulated high values in the southern Fergana Basin in 2018, which indicated the risk of joint poisoning. The distributions of high fluorine and arsenic were found to be determined by mining, industrial and agricultural activities, but not by natural sources. From 2016 to 2018, arsenic concentrations in the river water of Kyrgyzstan created a high risk of carcinogenesis by the ingestion intake exposure route, which resulted in the total risk of health hazards to children and adults caused by fluoride and arsenic to exceed the maximum acceptable ranges. Therefore, further monitoring and management are urgently needed.

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“…The presented technique was tested on various standard samples and has been successfully used in monitoring the transboundary rivers of Kazakhstan and studying the environmental situation in the basins of the most contaminate water objects [6][7][8].…”

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confidence: 99%

Uranium and Other Toxic Elements in Transboundary Waters Near Kamyshanovsky Deposit

Vladimir¹,

Bekmamat²,

Svetlana³

et al. 2020

SERIES OF GEOLOGY AND TECHNICAL SCIENCES

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The paper is devoted to revealing the signs of negative impact from the territory of the Kamyshanovskoye deposit (Kyrgyzstan) on the level of contamination with uranium and other hazardous elements in transboundary water bodies, in the first place in the Shu River. For this, six control points along the irrigation canal at this territory were chosen together with 9 control points along the Shu river within the area. The elemental composition of water samples was studied employing MS-ICP and OES-ICP; concentration values of 22 elements were determined. The calculations were performed based on the obtained contents of toxic elements of the 1st and 2nd classes. Corresponding sanitary standards exceed the corresponding values by 1.5 – 6.7 times. At that, uranium makes the main contribution to the toxicity level of the studied water in the Shu River (46%) and in the canal (61%). The toxicity of the water canal is for ~3 times higher than that of the Shu River. The highest toxicity indicator was found in the water delivered to the agricultural irrigation at the territory of the Kamyshanovskoye deposit. This peculiarity and the obtained data may be of interest to the Ministry of Agriculture of the Kyrgyz Republic. The distribution of chemical elements in water along the irrigation canal and along the Shu River bed was studied. It is established that the canal water do not become contaminated with toxic elements while passing through the deposit lands. It was established in the 3 control points of the Shu River that an increase (by 28 – 130%) in the concentration of Ca, Ni, Li, Sr, U, Mg, Cr, Ba over their concentrations at the control points is higher upstream of this river. The results obtained convincingly indicate the presence of a serious influence of the Kamyshanovskoye deposit territory on the Shu River contamination with these elements. It is unlikely that such significant contamination is caused by the irrigation system discharge waters. One of the possible mechanisms of water contamination in the Shu River in its segment may be the entry of groundwater in contact with the ore body of this deposit.

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Natural radionuclides and toxic elements in transboundary rivers of Kazakhstan

Cited by 10 publications

References 2 publications

Occurrence of Radionuclides and Hazardous Elements in the Transboundary River Basin Kyrgyzstan–Kazakhstan

Occurrence of Radionuclides and Hazardous Elements in the Transboundary River Basin Kyrgyzstan–Kazakhstan

Spatiotemporal Distributions of Fluorine and Arsenic in Rivers With the Role of Mining Industry and Related Human Health Risk Assessments in Kyrgyzstan

Uranium and Other Toxic Elements in Transboundary Waters Near Kamyshanovsky Deposit

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