The Navruz experiment: Cooperative monitoring for radionuclides and metals in Central Asia transboundary rivers

Barber, David S.; Betsill, Jeffrey David; Mohagheghi, Amir H; Passell, Howard David; Yuldashev, B. S.; Салихбаев, У. С.; Djuraev, A.A.; Vasiliev, Iuliana; Solodukhin, V. P.

doi:10.1007/s10967-005-0039-8

Cited by 12 publications

(8 citation statements)

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“…Sampling of soil, bottom sediment and water was performed in compliance with the procedures developed in the course of our previous work in 2000-2010 within the international project ''Navruz'' [4][5][6][7].…”

Section: Methodsmentioning

confidence: 99%

“…Instrumental gamma-spectrometry (IGS) was used for determination of the samples' radionuclide composition; neutron activation analysis (NAA), X-ray fluorescence analysis (XRF) and the inductively coupled plasma mass spectrometry (ICP-MS) methods were used in our studies of element composition in the taken samples [4][5][6][7][9][10][11].…”

Section: Methodsmentioning

confidence: 99%

“…More details of the procedures in the field and laboratory investigations are presented in [4][5][6][7][9][10][11].…”

Section: Neutron Activation Analysis (Naa)mentioning

confidence: 99%

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Radionuclides and toxic chemical elements in the transboundary Kyrgyzstan–Kazakhstan rivers

Solodukhin

Poznyak

Kabirova

et al. 2016

J Radioanal Nucl Chem

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The paper presents the results of radiation surveying and determination of radionuclide and elemental composition in water objects (soil, bottom sediments, water) of the transboundary rivers Shu, Shor-Koo, Aksu, Karabalta, Toktas as well as of Tasotkel water-storage in Kazakhstan in vicinity of the border with Kyrgyzstan. Increased contents of natural radionuclides of 238 U and 232 Th series, As, Co, Cs, Cu, Hf, Mo, Pb, Sb, Sc, Zn, Zr and rare earth elements were observed in soil and bottom sediment samples. Increased contents of the following toxic elements were revealed in water samples: B, As, Mo, Ba, U. Negative influence of radiation-hazardous sites in Kyrgyzstan on the contamination of the transboundary rivers with natural radionuclides and toxic elements was revealed.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Radionuclides and toxic chemical elements in the transboundary Kyrgyzstan–Kazakhstan rivers

Solodukhin

Poznyak

Kabirova

et al. 2016

J Radioanal Nucl Chem

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“…Heavy metals (Cd, Cu, Zn, Pb, Ni and Cr) are among the priority pollutants of water bodies in the Central Asian region and Kazakhstan in particular (Barber et al, 2005;Kurakov & Tynybaeva, 2007;Tolymbekov, Kelamanov, Baisanov & Kaskin, 2008;Zhaoyong, Abuduwaili & Fengqing, 2015;Solodukhin et al, 2004;. The content of heavy metals in natural aquatic ecosystems is determined by a complex of factors.…”

Section: Introductionmentioning

confidence: 99%

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Krupa¹,

Sophia²,

Sophia³

2019

Turk. J. Fish. Aquat. Sci.

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The aims of present work were to analyze on the base of our data of 1997-2017 the changes in the content of heavy metals in 118 water bodies in Kazakhstan, determine the relationship between the content of heavy metals and the level of anthropogenic load, to reveal natural factors affecting the accumulation of heavy metals in the water. It was revealed that average Cd content was 0.01-7.7 μg dm-3 , Cu-1.6-158.2, Zn-1.5-44.1, Pb-1.4-19.4, Cr-0.05-14.6, Ni-0.2-227.2 μg dm-3. The level of toxic pollution of water bodies increased against the altitude gradient. The relationship between the content of heavy metals and the altitude of location of a water body was indirect, because was an accompanying change in the pH, temperature, and TDS of water. In water bodies with a TDS above 2000 mg dm-3, Pb, Cr, Cd and Cu were accumulating most intensively, whereas fresh waters contained higher amounts of Zn and Ni. Regression analysis revealed the leading role of pH in the accumulation of heavy metals in water bodies. An increase in anthropogenic load in the direction from mountainous areas to plains led to the additional enrichment of water bodies with heavy metals.

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“…The three-year Navruz project was designed to bring together Kazakh, Uzbek, Tajik and Kyrgyz scientists to perform radioecological monitoring of Syrdarya and Amudarya rivers (Yuldashev et al, 2002;Yuldashev et al, 2005). The analysis of transboundary radionuclide contamination of Syrdarya was based on water samples from 60 monitoring sites (15 in each country) and analyzed for radiation readings, 71 radionuclides and heavy metals (Barber et al, 2005). The project concluded that radionuclide contamination of Syrdarya in Kazakhstan was caused by inflows from Uzbekistan, Keles and Arys river tributaries.…”

Section: Introductionmentioning

confidence: 99%

Twelve-Year Monitoring Results of Radioactive Pollution in the Kazakh Part of the Syrdarya River Basin

Zhanbekov¹,

Akhmetov²,

Vundo³

et al. 2018

Environ. Nat. Resource. J.

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Assessment of radioactive pollution of the Syrdarya river was carried out. A large number of water samples were collected over a twelve-year period from three zones: upstream of uranium mines; around uranium mines; and downstream of the mines. Samples were analyzed for gross α-, β-activity and radionuclide concentrations. Gross α-activity exceeded the permissible level in almost every water sample. Both gross α-and β-activity in Baigekum village and PV-1 mine significantly exceeded safe levels throughout entire monitoring period. Concentrations of 230 Th and 210 Pb surpassed the national intervention levels in almost all water samples. In a number of samples from Baigekum village excessive concentration of 226 Ra was observed. Furthermore, water samples collected from Tabakbulak in the spring of 2009 had extremely high levels of radionuclides. In general, elevated levels of radionuclides had been observed around the uranium mines and down the stream of Syrdarya since 2008-2009 when industrial-level production started at Zarechnoye, Khorasan and Irkol uranium deposits. The results suggest that radioactive pollution of Syrdarya in Kazakhstan is primarily caused by uranium mining activities. It is likely that the Syrdarya waters are not only unpalatable for human, but it may also not be suitable for household and agricultural use due to radioactive pollution.

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The Navruz experiment: Cooperative monitoring for radionuclides and metals in Central Asia transboundary rivers

Cited by 12 publications

References 1 publication

Radionuclides and toxic chemical elements in the transboundary Kyrgyzstan–Kazakhstan rivers

Radionuclides and toxic chemical elements in the transboundary Kyrgyzstan–Kazakhstan rivers

Untitled

Twelve-Year Monitoring Results of Radioactive Pollution in the Kazakh Part of the Syrdarya River Basin

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