Distribution of the radiation dose of mammal teeth from South Ural region contaminated by a radiation accident in former Soviet Union

前苏联南乌拉尔地区辐射事故污染哺乳动物牙齿辐射剂量分布

• 批准号: 15405006
• 负责人: TOYODA Shin
• 金额: $ 7.42万
• 依托单位: Okayama University of Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15405006/
• 关键词: ESR; hydroxyapatite; tooth; radiation dose; accident dose; Ural; Semipalatinsk; 被爆線量

Radioactive nuclei released by radiation accidents of nuclear power plant and by nuclear tests caused serious contamination especially in former Soviet Union which has affected human health. It would be most useful to measure the ESR signal intensities of human teeth in order to estimate the dose of individual human, however, human teeth are not always available. In the present study, we collected mammal teeth in order to investigate the distribution of radiation does in the contaminated areas.The images of distribution of ^<90>Sr in the cow teeth collected at farms of South Ural region were obtained by Fuji imaging plates with photostimulated luminescence. The average concentrations were correlated well with the level of soil contamination. However, there are still variations in the ^<90>Sr concentration even within the same farm. We tried to obtain the feeding record for the cows, but have not been successful so far. The best chemical conditions to extract enamel from the whole teeth were determined by the experiments changing the temperature, concentration, and duration of alkaline treatments. ESR measurements of some of the teeth from the region showed doses up to 200 mGy. But this largest value should be considered to be a preliminary result.The present environmental radiation doses of the Semipalatinsk nuclear test site and the regions nearby were not so high, up to twice or three times as high as that of background, however, some of the mammal teeth showed ^<90>Sr concentrations up to several Bq/g where no significant soil contamination has not been reported. We have not identified what gave such an high contamination level in mammal teeth so far.

核电站的辐射事故和核试验释放的放射性核造成了严重的污染，尤其是在前苏联影响人类健康的情况下。测量人牙齿的ESR信号强度是为了估计人类剂量的最有用的，但是，人牙齿并不总是可用。在本研究中，我们收集了哺乳动物的牙齿，以研究受污染区域中辐射的分布。通过光刺激发光的富士成像平板，获得了在南部乌拉尔地区收集的牛齿中 ^<90> SR的分布图像。平均浓度与土壤污染的水平很好地相关。但是，即使在同一农场内， ^<90> SR浓度仍然存在变化。我们试图获得奶牛的喂养记录，但到目前为止还没有成功。从整个牙齿中提取搪瓷的最佳化学条件是通过改变碱性处理的温度，浓度和持续时间的实验来确定的。来自该地区的某些牙齿的ESR测量结果表明剂量高达200 mGY。但是，这一最大价值应被认为是初步结果。Semipalatinsk核试验场的当前环境辐射剂量和附近的区域的最高很高，多达两倍或三倍，但是哺乳动物的某些牙齿显示出 ^<90> SR浓度没有大量的BQ/G，没有重大的土壤污染物均未报道过。到目前为止，我们尚未确定是什么使哺乳动物牙齿的污染水平如此高。

项目成果

The 3rd international intercomparison on EPR tooth dosimetry : Part 1, general analysis

第三届EPR牙齿剂量测定国际比对：第1部分，一般分析

• 发表时间: 2005
• 期刊: Applied Radiation and Isotopes 62
• 作者: Khailov;A.;平林今日子;片山博昭;川野徳幸;V.F.Stepanenko;V.F.Stepanenko;H.Sato;H.Y.Goksu;A.Ivannikov;K.Zhumadilov;A.Romanyukha;V.Skvortsov;S.Toyoda;A.Sevan'kaev;K.Tanaka;M.Yamamoto;N.Semioshkina;A.Sakaguchi;E.Tieliewuhan;T.Imanaka;K.Gordeev;K.Gordeev;S.L.Simon;V.F.Stepanenko;K.Tanaka;N.Chaizhunusova;N.Takeichi;Y.Taooka;Z.Zhumadilov;H.Katayama;N.Kawano;N.Kawano;M.Matsuo;星 正治;武市 宣雄;Stepanenko V.F.;Stepanenko V.F.;Sato H.;Goksu H.Y.;Ivannikov A.;Zhumadilov K.;Romanyukha A.;Skvortsov V.;Toyoda S.;Sevan'kaev A.;Tanaka K.;Yamamoto M.;Semioshkina N.;Sakaguchi A.;Tieliewuhan E.;Imanaka T.;Gordeev K.;Gordeev K.;Simon S.L.;Stepanenko V.F.;Tanaka K.;Chaizhunusova N.;Takeichi N.;Taooka Y.;Zhumadilov Z.;Katayama H.;Kawano N.;Kawano N.;Matsuo M.;Hoshi M.;Takeichi N.;星 政治;A.Ivannikov;M.Yamamoto;E.Tieliewuhan;星 正治;星 正治;T.Imanaka;S.Toyoda;A.Wieser
• 通讯作者: A.Wieser

Radiation dose estimation by tooth enamel EPR dosimetry for residents of Dolon and Bodene

• DOI: 10.1269/jrr.47.a47
• 发表时间: 2006-02-01
• 期刊: JOURNAL OF RADIATION RESEARCH
• 影响因子: 2
• 作者: Zhumadilov, Kassym;Ivannikov, Alexander;Hoshi, Masaharu
• 通讯作者: Hoshi, Masaharu

ESR dosimetry and ^<90>Sr concentration of cow teeth from Southern Urals

南乌拉尔牛牙齿的 ESR 剂量测定和 ^<90>Sr 浓度

• 发表时间: 2004
• 期刊: Proceedings for the 11^<th> International Congress of the International Radiation Protection Association
• 作者: S.Toyoda;Y.Ueda;H.Imata;A.Romanyukha;M.Hoshi;N.Lyubashevskiy;C.Miyazawa
• 通讯作者: C.Miyazawa

Around Semipalatinsk Nuclear Test Site : Progress of dose estimation relevant to the consequences of nuclear tests

塞米巴拉金斯克核试验场周围：与核试验后果相关的剂量估算进展

• 发表时间: 2006
• 期刊: Jour.Radiat.Res 47
• 作者: V.Stepanenko;M.Hoshi;I.K.Bailiff;A.I.Ivannikov;S.Toyoda;M.Yamamoto;S.L.Simon;M.Matsuo;N.Kawano;Z.Zhumadilov;M.S.Sasaki;R.I.Rosenson;K.N.Apsalikov
• 通讯作者: K.N.Apsalikov

S.Toyoda, Y.Ueda, H.Imata, A.Romanyukha, M.Hoshi, N.Lyubashevskiy, C.Miyazawa: "ESR dosimetry and ^<90>Sr concentration of cow teeth from Southern Urals"Proceedings for the 11^<th> International Congress of the International Radiation Protection Associati

S.Toyoda、Y.Ueda、H.Imata、A.Romanyukha、M.Hoshi、N.Lyubashevskiy、C.Miyazawa：“乌拉尔南部牛牙的 ESR 剂量测定和 ^<90>Sr 浓度”11^ 会议记录