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Relationships between air dose rates and radionuclide concentrations in agricultural plants observed in areas affected by the Fukushima Dai-ichi accident.
Journal of Environmental Radioactivity ( IF 2.3 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.jenvrad.2020.106359
Takuro Shinano 1 , Mayumi Hachinohe 2 , Sergey Fesenko 3
Affiliation  

Most of environmental monitoring programs include measurements of the air dose rates and the radionuclides activity concentration in plants. Both these parameters depend on deposition density of radionuclides. Therefore, measurements of one parameter can (with some supplementary information) be used as an indicator for the other parameter. After the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident, the Emergency Operation Centre (EOC) operated by the Environmental Radioactivity Monitoring centre of Fukushima and Ministry of Agriculture, Forestry and Fisheries (MAFF) of Japan carried out large sampling programme over different distances from the NPP. The sampling programme was focused on the usage of the weed leaves as a proxy for the prediction of radionuclide transfer to some cultivated plants. The MAFF monitoring programme in 2011–2016 was addressed mainly to agricultural crops. In both cases, the air dose rates were measured at the sites of the sampling. The paper addresses the assessments of relationship between radionuclide activities concentrations in plants and ambient dose rates. The time—dependent relationships were quantified based on weed, buckwheat, brown rice and soybean data obtained in 2011–2016. The recommendations on optimizing emergency sampling programmes based on use of the data of ambient dose rates are also presented.



中文翻译:

在福岛第一核电站事故影响地区观察到的空气剂量率与农业植物中放射性核素浓度之间的关系。

大多数环境监测程序都包括对植物中空气剂量率和放射性核素活性浓度的测量。这两个参数都取决于放射性核素的沉积密度。因此,一个参数的测量值可以(带有一些补充信息)用作另一参数的指标。福岛第一核电站事故发生后,由福岛县环境放射性监测中心和日本农林水产省(MAFF)运营的应急运行中心(EOC)对不同地区进行了大规模采样与NPP的距离。采样计划的重点是使用杂草叶作为预测放射性核素向某些栽培植物转移的替代指标。2011-2016年的MAFF监测计划主要针对农作物。在这两种情况下,都是在采样点测量空气剂量率。该文件着重评估了植物中放射性核素活度浓度与环境剂量率之间的关系。基于时间依赖性的关系基于2011-2016年获得的杂草,荞麦,糙米和大豆数据进行了量化。还介绍了有关基于环境剂量率数据优化紧急情况采样程序的建议。基于时间依赖性的关系基于2011-2016年获得的杂草,荞麦,糙米和大豆数据进行了量化。还介绍了有关基于环境剂量率数据优化紧急情况采样程序的建议。基于时间依赖性的关系基于2011-2016年获得的杂草,荞麦,糙米和大豆数据进行了量化。还介绍了有关基于环境剂量率数据优化紧急情况采样程序的建议。

更新日期:2020-08-01
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