Dosimetry study of East Kazakhstan residents by tooth enamel EPR spectroscopy

Kassym Zhumadilov,Tolebay Rakhypbekov,Valeriy Stepanenko,Alexander Ivannikov,Valeriy Skvortsov,Masaharu Hoshi,B Kaźmierczak,H Jouhara,J Danielewicz,M Kutyłowska,K Piekarska

doi:10.1051/e3sconf/20172200202

Abstract

The tooth enamel electron paramagnetic resonance (EPR) dosimetry method was used to determine accidental doses of population of settlements in the vicinity of the Semipalatinsk Nuclear Test Site (SNTS), Kazakhstan. The influence of four explosions to the populations was included into this report. The distances between investigated settlements and Ground Zero (SNTS) are in the range of 70-200 km from SNTS. Most of settlements (Dolon, Mostik, Bodene, Cheremushki, Kanonerka) are located near the central axis of radioactive fallout trace from the most contaminating surface nuclear test, which was conducted in 29, August 1949. The other settlements located close to radioactive fallout trace result in a surface nuclear tests in 24, August 1956 (Ust-Kamenogorsk, Znamenka, Shemonaikha, Glubokoe, Tavriya, Gagarino), in 12 august 1953 (Sarzhal) and in 7, August 1962 (Akzhar, Kurchatov, Begen, Semenovka, Buras, Grachi). Tooth samples were extracted according to medical recommendations in a course of ordinary dental treatment.

Highlights

IntroductionIn the period from 1949 to 1962 125 nuclear tests (including 25 near-surface nuclear tests) were conducted at the Ground Zero technical site in the territory of Semipalatinsk Nuclear Test Site (SNTS). 11 of surface explosions heavily contaminated a huge territory of East Kazakhstan
In the period from 1949 to 1962 125 nuclear tests were conducted at the Ground Zero technical site in the territory of Semipalatinsk Nuclear Test Site (SNTS). 11 of surface explosions heavily contaminated a huge territory of East Kazakhstan
More than 200 teeth samples were collected from the population residing around SNTS. 105 teeth samples were extracted on the basis of medical indications from the adult residents of Dolon, Mostik, Bodene, Cheremushki, Kanonerka villages, located near the radioactive fallout trace formed as result of the most hazardous nuclear test of 1949 [16] and Semipalatinsk (Semey) city. 57 teeth samples were extracted from residents of Kurchatov City, Akzhar, Begen, Semenovka, Grachi, Mayskoe and Buras villages which are located from 70 to 150 km from SNTS [13]

Summary

Introduction

In the period from 1949 to 1962 125 nuclear tests (including 25 near-surface nuclear tests) were conducted at the Ground Zero technical site in the territory of Semipalatinsk Nuclear Test Site (SNTS). 11 of surface explosions heavily contaminated a huge territory of East Kazakhstan. 11 of surface explosions heavily contaminated a huge territory of East Kazakhstan. The date of 29 August 1949 represents the first nuclear explosion, which contaminated a huge territory northeast from the epicenter by radioactive fallout (Dolon, Mostik, Bodene, Cheremushki, Kanonerka villages). There is no data describing the dynamics of the precipitation of the dust from the radioactive cloud on the region adjacent to the SNTS. It is a very complicated procedure to reconstruct the individual and collective radiation doses obtained by the local population. This is a sophisticated procedure combining data of the radioactive fallout, individual doses measured by EPR, doses reconstructed from retrospective area dosimetry and individual behavior of inhabitants

Methods

Results

Conclusion