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Reconstruction of Long-lived Radionuclide Intakes for Techa Riverside Residents: 137Cs.
MedLine Citation:
PMID:  23532077     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Radioactive contamination of the Techa River (Southern Urals, Russia) occurred from 1949-1956 due to routine and accidental releases of liquid radioactive wastes from the Mayak Production Association. The long-lived radionuclides in the releases were Sr and Cs. Contamination of the components of the Techa River system resulted in chronic external and internal exposure of about 30,000 residents of riverside villages. Data on radionuclide intake with diet are used to estimate internal dose in the Techa River Dosimetry System (TRDS), which was elaborated for the assessment of radiogenic risk for Techa Riverside residents. The Sr intake function was recently improved, taking into account the recently available archival data on radionuclide releases and in-depth analysis of the extensive data on Sr measurements in Techa Riverside residents. The main purpose of this paper is to evaluate the dietary intake of Cs by Techa Riverside residents. The Cs intake with river water used for drinking was reconstructed on the basis of the Sr intake-function and the concentration ratio Cs-to-Sr in river water. Intake via Cs transfer from floodplain soil to grass and cows' milk was evaluated for the first time. As a result, the maximal Cs intake level was indicated near the site of releases in upper-Techa River settlements (8,000-9,000 kBq). For villages located on the lower Techa River, the Cs intake was significantly less (down to 300 kBq). Cows' milk was the main source of Cs in diet in the upper-Techa River region.
Authors:
E I Tolstykh; M O Degteva; L M Peremyslova; N B Shagina; M I Vorobiova; L R Anspaugh; B A Napier
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Health physics     Volume:  104     ISSN:  1538-5159     ISO Abbreviation:  Health Phys     Publication Date:  2013 May 
Date Detail:
Created Date:  2013-03-27     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2985093R     Medline TA:  Health Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  481-98     Citation Subset:  IM    
Affiliation:
*Urals Research Center for Radiation Medicine, Vorovskogo 68 a, 454076 Chelyabinsk, Russian Federation; †Division of Radiobiology, Department of Radiology, University of Utah, Salt Lake City, UT; ‡Pacific Northwest National Laboratory, Richland, WA 99352.
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