10. Scientific aspects of lowering criticality of radioactively polluted agricultural landscapes in distant period of development of radiation situation

Bulygin S. Ju., Dutov O. I.
Pages: 49-53.

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Abstract
Goal. To determine the regularities of the receipt of radionuclides to agricultural products in the remote period of the development of the radiation situation at different levels of mineral nutrition of plants and saturation of crop rotation with agricultural crops, which are characterized by relatively low ability to accumulate radionuclides. Methods. The content of 137Cs as the main dosage form of radionuclide in soil and vegetation samples was determined by spectrometric method on the gamma spectrometric equipment with semiconductor detectors GEM-30185, Ge (Li), GMX series EG & G ORTEC with multichannel ADCAM-300 analyzer. Results. The laws of 137Cs' receipt of agricultural products on different soils depending on fertilization and selection of crops are established. Conclusions The saturation of field crop rotation with agricultural crops that are characterized by a potentially low ability to accumulate radionuclides can reduce the criticality of radioactive contaminated agro-landscapes by up to 13 time.

Key words: radiation protection measures, specific activity of radionuclides, agricultural products, 137Cs, norms of radionuclide content.

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