Limited internal radiation exposure associated with resettlements to a radiation-contaminated homeland after the Fukushima Daiichi nuclear disaster.
Limited internal radiation exposure associated with resettlements to a radiation-contaminated homeland after the Fukushima Daiichi nuclear disaster.
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DOI：
10.1371/journal.pone.0081909
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发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Endo Y
中科院分区：
文献类型：
--
作者：
Tsubokura M;Kato S;Nihei M;Sakuma Y;Furutani T;Uehara K;Sugimoto A;Nomura S;Hayano R;Kami M;Watanobe H;Endo Y
在核灾难发生时，重新安置到受辐射污染的家乡可能是流离失所者的一种选择;然而，关于这些重新安置计划的安全影响的信息很少。川内村位于福岛第一核电站西南12-30公里处，是中央政府下令强制疏散的11个市之一。该村也是第一个组织村民返回的市镇。为了评估川内村民重新安置计划的有效性，使用全身计数器对川内村民中返回者、通勤者和非返回者的内部铯（Cs）暴露水平进行了比较测量。在149人中，5名村民有可追踪的铯暴露水平;检测到的中位数水平为333 Bq/人（范围：309-1050 Bq/kg）和5.3 Bq/kg（范围：5.1-18.2 Bq/kg）。可追踪铯的村民的年有效剂量中位数为1.1 x 10-2 mSv/y（范围为1.0 x 10-2-4.1 x 10-2 mSv/y）。虽然回国人员有更高的机会消费当地生产的蔬菜，Cochran-Mantel-Haenszel检验表明，他们的内照射水平并没有显着高于其他2组（p=0.643）。目前在川内村的调查结果表明，即使在发生核灾难时处于高度辐射污染的地区，也有可能将内部辐射照射保持在非常低的水平。此外，在重新安置到受辐射污染的村庄后，通过严格的食品控制干预措施，可以限制内部辐射照射的风险。至关重要的是，要在村庄内建立足够数量的放射性污染检测点，向村民提供即时的检测结果反馈，并就重新检测对降低高内照射风险的重要性开展教育。
Resettlement to their radiation-contaminated hometown could be an option for people displaced at the time of a nuclear disaster; however, little information is available on the safety implications of these resettlement programs. Kawauchi village, located 12–30 km southwest of the Fukushima Daiichi nuclear power plant, was one of the 11 municipalities where mandatory evacuation was ordered by the central government. This village was also the first municipality to organize the return of the villagers. To assess the validity of the Kawauchi villagers’ resettlement program, the levels of internal Cesium (Cs) exposures were comparatively measured in returnees, commuters, and non-returnees among the Kawauchi villagers using a whole body counter. Of 149 individuals, 5 villagers had traceable levels of Cs exposure; the median detected level was 333 Bq/body (range, 309–1050 Bq/kg), and 5.3 Bq/kg (range, 5.1–18.2 Bq/kg). Median annual effective doses of villagers with traceable Cs were 1.1 x 10-2 mSv/y (range, 1.0 x 10-2-4.1 x 10-2 mSv/y). Although returnees had higher chances of consuming locally produced vegetables, Cochran-Mantel-Haenszel test showed that their level of internal radiation exposure was not significantly higher than that in the other 2 groups (p=0.643). The present findings in Kawauchi village imply that it is possible to maintain internal radiation exposure at very low levels even in a highly radiation-contaminated region at the time of a nuclear disaster. Moreover, the risks for internal radiation exposure could be limited with a strict food control intervention after resettlement to the radiation-contaminated village. It is crucial to establish an adequate number of radio-contaminated testing sites within the village, to provide immediate test result feedback to the villagers, and to provide education regarding the importance of re-testing in reducing the risk of high internal radiation exposure.
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影响因子：
3.7
作者：
Nomura S;Gilmour S;Tsubokura M;Yoneoka D;Sugimoto A;Oikawa T;Kami M;Shibuya K
通讯作者：
Shibuya K
影响因子：
3.7
作者：
Taira Y;Hayashida N;Yamaguchi H;Yamashita S;Endo Y;Takamura N
通讯作者：
Takamura N
影响因子：
2.2
作者：
Handl, J;Beltz, D;Romantschuk, LD
通讯作者：
Romantschuk, LD
DOI：
10.2183/pjab.89.157
发表时间：
2013-04-01
影响因子：
3.1
作者：
Hayano, Ryugo S.;Tsubokura, Masaharu;Sakuma, Yu
通讯作者：
Sakuma, Yu
影响因子：
3.3
作者：
Aoki, Tatsuo;Takahashi, Jun;Shimokawa, Hiroaki
通讯作者：
Shimokawa, Hiroaki