Dose reconstruction by EPR spectroscopy of tooth enamel: Application to the population of Zaborie village exposed to high radioactive contamination after the chernobyl accident
Résumé
Individual irradiation doses were determined by electron paramagnetic resonance spectroscopy of the tooth enamel of the inhabitants of Zaborie, the most contaminated inhabited settlement not evacuated after the Chernobyl accident. Dose determination was performed using a specially developed automatic spectrum processing procedure. Spectrum processing was carried out in different operating modes, and average results were taken in order to reduce the contribution of uncertainty in dose determination caused by spectrum processing. The absorbed doses determined in enamel were corrected to take into account the contribution of natural background radiation and to determine the individual excess dose due to radioactive contamination of the territory. Individual excess doses are compared to calculated individualized doses to teeth, estimated using the local radioactive contamination levels, dose rates, and information concerning individual behavior. The individual excess doses measured by electron paramagnetic resonance spectroscopy and the calculated individualized doses are fully independent. Mean square variation between results of two methods was found to be 34 mGy, which is consistent with error estimation for both methods. This result can validate both the methodology of signal processing presented here when using electron paramagnetic resonance dosimetry of tooth enamel for low doses and the methodology of individualized dose calculation.
Mots clés
radioactive material
article
assay
automation
chernobyl accident
dose calculation
dose reconstruction
electron spin resonance
enamel
geographic distribution
human
human tissue
individualization
intermethod comparison
mathematical analysis
mean square variation
population research
priority journal
process monitoring
radiation dose
radiation dose distribution
radiation exposure
radiation field
radioactive contamination
signal processing
validation process
Accidents
Radiation
Algorithms
Body Burden
Cesium Radioisotopes
Dental Enamel
Electron Spin Resonance Spectroscopy
Environmental Monitoring
Humans
Models
Biological
Power Plants
Radiation Dosage
Radioactive Fallout
Radioactive Pollutants
Radiometry
Rural Population
Sensitivity and Specificity
Slovakia
Ukraine