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Shishkina, E.A.* ; Volchkova, A.Y.* ; Timofeev, Y.S.* ; Fattibene, P.* ; Wieser, A. ; Ivanov, D.V.* ; Krivoschapov, V.A.* ; Zalyapin, V.I.* ; Della Monaca, S.* ; de Coste, V.* ; Degteva, M.O.* ; Anspaugh, L.R.*

External dose reconstruction in tooth enamel of Techa riverside residents.

Radiat. Environ. Biophys. 55, 1-23 (2016)
Postprint DOI PMC
Open Access Green
This study summarizes the 20-year efforts for dose reconstruction in tooth enamel of the Techa riverside residents exposed to ionizing radiation as a result of radionuclide releases into the river in 1949-1956. It represents the first combined analysis of all the data available on EPR dosimetry with teeth of permanent residents of the Techa riverside territory. Results of electron paramagnetic resonance (EPR) measurements of 302 teeth donated by 173 individuals living permanently in Techa riverside settlements over the period of 1950-1952 were analyzed. These people were residents of villages located at the free-flowing river stream or at the banks of stagnant reservoirs such as ponds or blind river forks. Cumulative absorbed doses measured using EPR are from several sources of exposure, viz., background radiation, internal exposure due to bone-seeking radionuclides ((89)Sr, (90)Sr/(90)Y), internal exposure due to (137)Cs/(137m)Ba incorporated in soft tissues, and anthropogenic external exposure. The purpose of the present study was to evaluate the contribution of different sources of enamel exposure and to deduce external doses to be used for validation of the Techa River Dosimetry System (TRDS). Since various EPR methods were used, harmonization of these methods was critical. Overall, the mean cumulative background dose was found to be 63 ± 47 mGy; cumulative internal doses due to (89)Sr and (90)Sr/(90)Y were within the range of 10-110 mGy; cumulative internal doses due to (137)Cs/(137m)Ba depend on the distance from the site of releases and varied from 1 mGy up to 90 mGy; mean external doses were maximum for settlements located at the banks of stagnant reservoirs (~500 mGy); in contrast, external doses for settlements located along the free-flowing river stream did not exceed 160 mGy and decreased downstream with increasing distance from the site of release. External enamel doses calculated using the TRDS code and derived from the EPR measurements were found to be in good agreement.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Background Dose ; Epr Dosimetry ; Environmental Exposure ; Harmonization ; Strontium ; The Techa River; Electron-paramagnetic-resonance; Mayak Production Association; Epr-dosimetry; Human Teeth; Urals Population; Upper Reaches; Part 2; Radiation; Region; Model
Language english
Publication Year 2016
HGF-reported in Year 2016
ISSN (print) / ISBN 0301-634X
e-ISSN 1432-2099
Journal Radiation and Environmental Biophysics
Quellenangaben Volume: 55, Issue: 4, Pages: 1-23 Article Number: , Supplement: ,
Publisher Springer
Publishing Place New York
Reviewing status Peer reviewed
Institute(s) Institute of Radiation Protection (ISS)
POF-Topic(s) 30504 - Mechanisms of Genetic and Environmental Influences on Health and Disease
Research field(s) Radiation Sciences
PSP Element(s) G-501100-005
DOI 10.1007/s00411-016-0666-1
WOS ID WOS:000387350800008
Scopus ID 84986300512
PubMed ID 27600653
Erfassungsdatum 2016-09-09
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