Radioactive inventories from the Kyshtym and Karachay accidents: estimates based on soil samples collected in the South Urals (1990–1995)

Aarkrog, A.; Dahlgaard, H.; Nielsen, Sven Poul; Трапезников, А. В.; Молчанова, И. В.; Pozolotina, V. N.; Karavaeva, E.N.; Yushkov, P.I.; Polikarpov, G.G.

doi:10.1016/s0048-9697(97)00098-3

Cited by 63 publications

(29 citation statements)

References 3 publications

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“…It appeared that on the territory of Eastern Urals Radioactive Trace the contamination density of the soil cover by long-living radionuclides decreased with the distance from the accident epicenter. Early it was noticed that this decrease is approximated by exponential function [2]. The content of 90 Sr and 137 Cs in the Techa river floodplain soils is higher than the same values on the control plot by a factor of 20-120, as the content of 239,240 Pu comes nearer to that on the control plot.…”

Section: Resultsmentioning

confidence: 94%

Peculiarities of the technogenical radionuclides transfer from soils into plants in the radioactive contaminated areas

2009

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Abstract. The peculiarities of 90 Sr, 137 Cs, 239,240 Pu accumulation by some species of herbaceous plants in radioactive contaminated areas of nuclear enterprises in Russia have been investigated. Gas and aerosol discharge from Beloyarskaya NPP (which operates for more than 30 years) did not make considerable contamination of soil-vegetational cover in the 30-km zone. In close proximity to the epicenter of nuclear accident of 1957 in the Urals the concentration of the main contaminant ( 90 Sr) in the plants reached maximal value (tens and hundred of thousands of Bq kg −1 dw depending on species belonging of plant). The concentration of 90 Sr in aboveground phytomass of plants growing within floodplain of the Techa river ecosystems is thousands of Bq kg −1 dw ; at the same time, the 137 Cs concentration is units of Bq kg −1 dw . The absence of direct dependence between the radionuclides content in the soils and their concentration in aboveground phytomass is noticeable. The values of the radionuclides transfer coefficients in the plants were estimated as well as the content in the soils of their water-soluble and firmly fixed physic-chemical forms. The radionuclides have been ranked into a row according to their mobility in observed soils and biogeocenotical soil-plant link.

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Section: Resultsmentioning

confidence: 94%

Peculiarities of the technogenical radionuclides transfer from soils into plants in the radioactive contaminated areas

2009

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“…• angle and 300 km radius from the conventional center -PA Mayak [2], from boundary of EURSR [4]. This simplified model we used and for calculation of radionuclide stocks within EURSR (6-30 km to the north-east from PA Mayak).…”

Section: Resultsmentioning

confidence: 99%

“…Here, confidence interval for I corresponds approximately to the 1 st standard deviation. Summarizing the data gathered for EURT outside the reserve in previous years [4] and the above results for the impact zone, we can formulate the general relation of changing radionuclide soil contamination densities with distance from PA Mayak (Fig. 3).…”

Section: Resultsmentioning

confidence: 99%

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Radioactive inventories within the East-Ural radioactive state reserve on the Southern Urals

et al. 2009

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“…haematological and immunological indices and frequencies of micronuclei occurrence in the bone marrow cells) were studied in animals inhabiting both the EURT zone and undisturbed territories of the Urals with global level of the 90 Sr pollution [7]. Radioresistance, which was considered as a characteristic determined by a species genotype [8], was assessed experimentally after acute irradiation ( 137 Cs) of animals by different doses, dose rate -1.24 cGy/sec.…”

Section: Sampling and Analysismentioning

confidence: 99%

Radioadaptation of rodents in the zone of local radioactive contamination (Kyshtim Accident, Russia): 50 years on

Grigorkina

Olenev

2009

Radioprotection

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Abstract.Results of radioecological investigations of rodents having different ecological specializationwood and field mice, northern red-backed voles and mole-voles to acute (laboratory experiment) and chronic (long-term inhabiting the East Ural Radioactive Trace -EURT) irradiation are summarized. These species are greatly distinguished by a way of life, a migratory activity, an average life span etc. Numerous immunological, hematological and cytogenetical disturbances were found in more radioresistant wood and field mice and northern red-backed voles inhabiting the EURT zone (density of soil pollution by 90 Sr − 18.5 MBq/m 2 = 500 Ci/km 2 ) as compared with the reference samples. On the contrary there were no pathological shifts in more radiosensitive mole-voles from the more radioactively contaminated site ( 90 Sr − 37 MBq/m 2 = 1000 Ci/km 2 ). The absorbed dozes during the life for the mole-voles from the EURT zone were significantly higher (in 30 times) than these ones for mice and voles. These data testify about the possibility of radioadaptation in a series of generations in mole-voles that developed due to their ecophysiological features and isolation of settlement in the radiocontaminated zone. Mice and voles form a flowing population and slip off the prolonged influence of a damaging factor, this circumstance prevents the development of radioadaptation.

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Radioactive inventories from the Kyshtym and Karachay accidents: estimates based on soil samples collected in the South Urals (1990–1995)

Cited by 63 publications

References 3 publications

Peculiarities of the technogenical radionuclides transfer from soils into plants in the radioactive contaminated areas

Peculiarities of the technogenical radionuclides transfer from soils into plants in the radioactive contaminated areas

Radioactive inventories within the East-Ural radioactive state reserve on the Southern Urals

Radioadaptation of rodents in the zone of local radioactive contamination (Kyshtim Accident, Russia): 50 years on

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