Internal radiocesium contamination of adults and children in Fukushima 7 to 20 months after the Fukushima NPP accident as measured by extensive whole-body-counter surveys
Internal radiocesium contamination of adults and children in Fukushima 7 to 20 months after the Fukushima NPP accident as measured by extensive whole-body-counter surveys
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DOI：
10.2183/pjab.89.157
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发表时间：
2013-04-01
影响因子：
3.1
通讯作者：
Sakuma, Yu
中科院分区：
文献类型：
--
作者：
Hayano, Ryugo S.;Tsubokura, Masaharu;Sakuma, Yu
福岛第一核电站事故使福岛县人口密集地区的土壤受到放射性铯污染，这对居民造成了内部和外部照射的重大风险。根据切尔诺贝利事故后的研究结果，福岛地区内照射量超过几mSv/y的情况非常普遍。但2011年10月至2012年11月在平田中央医院进行的广泛的全身计数器调查（n = 32，811）显示，居民的内照射量远低于估计值。特别是，对福岛三春镇儿童内照射的首次无抽样偏倚评估显示，2012年秋季，所有儿童（n = 1，383，6-15岁，涵盖95%在镇办学校就读的儿童）的Cs-137身体负荷低于300 Bq/身体的检测限。这些结果对整个县来说并不是结论性的，但与该县其他市的结果和县的数据一致。
The Fukushima Dai-ichi NPP accident contaminated the soil of densely-populated regions in Fukushima Prefecture with radioactive cesium, which poses significant risks of internal and external exposure to the residents. If we apply the knowledge of post-Chernobyl accident studies, internal exposures in excess of a few mSv/y would be expected to be frequent in Fukushima.Extensive whole-body-counter surveys (n = 32,811) carried out at the Hirata Central Hospital between October, 2011 and November, 2012, however show that the internal exposure levels of residents are much lower than estimated. In particular, the first sampling-bias-free assessment of the internal exposure of children in the town of Miharu, Fukushima, shows that the Cs-137 body burdens of all children (n = 1,383, ages 6-15, covering 95% of children enrolled in town-operated schools) were below the detection limit of 300 Bq/body in the fall of 2012. These results are not conclusive for the prefecture as a whole, but are consistent with results obtained from other municipalities in the prefecture, and with prefectural data.