Main dependencies in reduction of radiation exposure to the population of the Southern Urals.
Dynamics of soil contamination, food chain, and radiation doses to population at the East-Urals Radioactive Trace (EURT) and the Karachay Radioactive Trace (KRT) are reviewed. Gamma spectrometric analysis of samples was performed according to standard methodology; 90Sr was determined by the extraction method. Over 80% of radionuclides in soil are contained in the upper 20-cm layer. Biologically available forms of Sr and insoluble forms of 137Cs are predominant. The main reasons for reduction in milk contamination are radioactive decay and sequestration of radionuclides in soil. Current annual intake of radionuclides with food: EURT--310 Bq (90Sr), KRT--324 Bq (90Sr) and 732 Bq (137Cs).
Urals Research Center for Radiation Medicine, Chelyabinsk. kost@urcrm.ru
Vladimir A
VA
Kostyuchenko
Liudmila M
LM
Peremyslova
Irina Y
IY
Popova
Nina N
NN
Kazachyonok
Viktor S
VS
Melnikov
D004781:Environmental Exposure / Q000032:analysis* / Q000517:prevention & control; D005507:Food Contamination, Radioactive / Q000032:analysis / Q000517:prevention & control; D006801:Humans; D011835:Radiation Protection; D018788:Radioactive Hazard Release; D011868:Radioisotopes / Q000032:analysis; D012426:Russia; D012987:Soil / Q000737:chemistry
D011868:Radioisotopes; D012987:Soil