| Autor: |
Ilyinskikh, N. N.1 root@ecogen.tomsk.su, Ilyinskikh, I. N.2, Shakirov, N. N.2, Smirnov, B. V.2, Ilyinskikh, E. N.2 |
| Předmět: |
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| Zdroj: |
Environmental Monitoring & Assessment. Apr2000, Vol. 61 Issue 3, p345-359. 15p. |
| Abstrakt: |
Between 1949 and 1957 Mayak Nuclear Facility located in the Chelyabinsk region released some discharges of radiochemical production wastes into the Techa River and Lake Karachay which resulted in an extensive contamination of large territories with long-lived radionuclides such as 90Sr, 137Cs, and 239Pu. Between 1994 and 1996 the research team of Siberian Medical University conducted the chromosome analysis and the electron-spin resonance (ESR) spectrometry of tooth enamel in the radiation-exposed inhabitants of four settlements in the Techa River region. We observed significantly increased levels of chromosome aberrations in the radiation-exposed inhabitants as compared to the controls. The ESR signal intensity and the chromosome aberration frequency in lymphocytes of the tooth donors showed a good correlation. Moreover, there was a good correlation between the level of whole-body 137Cs activity detected by a whole-body radiation counter and the frequency of chromosome aberrations among the radiation-exposed inhabitants. The data showed that 15% of the inhabitants of the Muslyumovo settlement received a radiation dose exceeding 100 cGy. The frequency of chromosome abnormalities reached its peak in the persons born between 1949 and 1957. We suppose that radionuclides incorporated in the body are responsible for the chromosome aberrations in the inhabitants. [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
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