Abstract
Between 1949 and 1957 Mayak Nuclear Facility locatedin the Chelyabinsk region released some discharges ofradiochemical production wastes into the Techa Riverand Lake Karachay which resulted in an extensivecontamination of large territories with long-livedradionuclides such as 90Sr, 137Cs, and239Pu. Between 1994 and 1996 the research teamof Siberian Medical University conducted thechromosome analysis and the electron-spin resonance(ESR) spectrometry of tooth enamel in theradiation-exposed inhabitants of four settlements inthe Techa River region. We observed significantlyincreased levels of chromosome aberrations in theradiation-exposed inhabitants as compared to thecontrols. The ESR signal intensity and the chromosomeaberration frequency in lymphocytes of the toothdonors showed a good correlation. Moreover, therewas a good correlation between the level ofwhole-body 137Cs activity detected by awhole-body radiation counter and the frequency ofchromosome aberrations among the radiation-exposed inhabitants. The data showed that 15% of theinhabitants of the Muslyumovo settlement received aradiation dose exceeding 100 cGy. The frequency ofchromosome abnormalities reached its peak in thepersons born between 1949 and 1957. We suppose thatradionuclides incorporated in the body are responsiblefor the chromosome aberrations in the inhabitants.
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Ilyinskikh, N.N., Ilyinskikh, I.N., Shakirov, N.N. et al. Monitoring of Radiation-Exposed People Close to Mayak Nuclear Facility in the Chelyabinsk Region (Russia) Using Different Biodosimetric Methods. Environ Monit Assess 61, 345–359 (2000). https://doi.org/10.1023/A:1006157314189
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DOI: https://doi.org/10.1023/A:1006157314189