A GIS-based evaluation of the effect of decontamination on effective doses due to long-term external exposures in Fukushima.
A GIS-based evaluation of the effect of decontamination on effective doses due to long-term external exposures in Fukushima.
复制标题
基于 GIS 的福岛长期外照射净化对有效剂量影响的评估。
DOI：
10.1016/j.chemosphere.2013.06.083
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发表时间：
2013
期刊：
影响因子：
8.8
通讯作者：
J. Nakanishi
中科院分区：
文献类型：
--
作者：
T. Yasutaka;Y. Iwasaki;Shizuka Hashimoto;W. Naito;K. Ono;A. Kishimoto;Kikuo Yoshida;M. Murakami;I. Kawaguchi;T. Oka;J. Nakanishi
尽管辐射净化的成本巨大，但几乎没有定量讨论这将在多大程度上减少福岛疏散区和计划疏散区(限制区)的长期外部辐射暴露。这项研究的目的是利用福岛限制区(约1100平方公里)的土地利用、人口和去污的数据，评估去污和返还方案的有效性，并确定用于估算15、30和70年期间长期累积有效剂量(CED)的重要参数。外暴露转换系数(EECC)是对去污后30年内超过100mSv的CED面积百分比影响最大的参数，范围从13%(EECC=40.2)到55%(EECC=60.6)。因此，我们建议对日本的EECC进行详细的调查。
Despite the enormous cost of radiation decontamination, there has been almost no quantitative discussion on how much it would reduce the long-term external radiation exposure in the Evacuation Zone and Planned Evacuation Zone (restricted zone) in Fukushima. The aim of this study is to assess the effectiveness of decontamination and return options and to identify important parameters for estimating the long-term cumulated effective dose (CED) during 15, 30 and 70 year period using data on land-use, population and decontamination in the restricted zone (about 1100 km2) in Fukushima.Decontamination of the land is assumed to have a certain efficacy in terms of the reduction of CED. The EeCC (external exposure conversion coefficient) is the parameter having the greatest effect on the percentage of area having CED during the 30 years above 100 mSv after decontamination, ranging from 13% (EeCC = 0.2) to 55% (EeCC = 0.6). Therefore, we recommend a detailed investigation of the EeCC in Japan.