Abstract
The distribution of 137Cs in the soils adjoining to Armenian Nuclear Power Plant along the predominant direction of winds is investigated. It is shown that the maximum on the curve of distribution of 137Cs corresponds to the leeward of ANPP, indicating a specific content of 137Cs that exceeds the background level due to the global fallout by about 20–25 %. A study of the total number of bacteria in the samples taken from the points of monitoring performed by the traditional methods of microbiology, showed that alee from ANPP, there is observed a statistically significant increase in the total amount of microorganisms with a maximum at the point that corresponds to the maximum on the radionuclide distribution curve. The same samples were examined in order to determine the quantitative contents of relatively radiosensitive and closely related bacteria species of P. putida and P. fluorescense and that of relatively radioresistant bacilli B. mesentericus and B. subtilis: the radiosensitivity of the latter was also investigated. It is shown that in soils with a high content of 137Cs the number of Pseudomonas cells with their somewhat increased radioresistance is lower than in the control sites. The content of cells of the Bacillus genus varies without certain regularity, and survival curves have almost the same characteristics at all the points.
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The work has been done under ISTC Project A-773. The authors express their gratitude to the directorate of the Centre.
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Khachatryan, G.E., Arakelyan, V.B., Simonyan, N.V., Mkrtchyan, N.I., Avakyan, T.M., Pyuskyulyan, K.I. (2016). Some Aspects of Radioecology in the Areas Adjacent to Armenian NPP. In: Korogodina, V., Mothersill, C., Inge-Vechtomov, S., Seymour, C. (eds) Genetics, Evolution and Radiation. Springer, Cham. https://doi.org/10.1007/978-3-319-48838-7_26
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