The ratio of plant 137Cs to exchangeable 137Cs in soil is a crucial factor in explaining the variation in 137Cs transferability from soil to plant
The ratio of plant 137Cs to exchangeable 137Cs in soil is a crucial factor in explaining the variation in 137Cs transferability from soil to plant
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植物 137Cs 与土壤中可交换 137Cs 的比率是解释 137Cs 从土壤到植物的转移性变化的关键因素
DOI：
10.1016/j.scitotenv.2022.159208
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发表时间：
2023
影响因子：
9.8
通讯作者：
Shinano Takuro
中科院分区：
文献类型：
--
作者：
Suzuki Masataka;Eguchi Tetsuya;Azuma Kazuki;Nakao Atsushi;Kubo Katashi;Fujimura Shigeto;Syaifudin Muhamad;Maruyama Hayato;Watanabe Toshihiro;Shinano Takuro
[en]在关于“放射性污染农田的修复”的协调研究项目（CRP）D15019的范围内，来自日本北海道大学、国家农业和食品研究组织和京都县立大学的合作者在《总环境科学》（https：//doi. org/10.1016/j. scitotenv. 2022.159208），标题为“The ratio of plant 137 Cs to exchangeable 137 Cs in soil is a crucial factor in explaining the variation in 137 Cs transferability from soil to plant”。为了减轻核事故后放射性铯从土壤向核电站的迁移，转移因子（TF：Radiation of Plant/Radiation of Soil）的使用已被广泛接受。然而，在2012年--福岛第一核电站（FDNPP）事故发生一年后--日本农林水产省修改了这一做法。只有TF单独被认为不足以预测工厂的放射性。同年，作为交换性钾（Kex.）发现水平在调节TF中起重要作用（Kato等，2015年），决定向受污染的农田施用大量钾肥。其影响是积极的，超过标准限值（100 Bq kg-1）的糙米袋与调查袋总数的比例从2011年的1.5%下降到2012年的0.0007%。然而，根据对K ex之间关系的大量调查。和水稻的TF（Yamamura等人，2018年，不同的土壤有明显的差异。在滨通（位于福岛县东部，大部分高污染区位于此），TF一般高于中通（位于福岛县中部）。
[en] In the scope of the Coordinated Research Project (CRP) D15019 on “Remediation of Radioactive Contaminated Agricultural Land”, collaborators from the Hokkaido University, the National Agriculture and Food Research Organization, and Kyoto Prefectural University in Japan published their research findings on how to estimate plant radioactivity using soil exchangeable 137 Cs in The Science of the Total Environment (https://doi. org/10.1016/j. scitotenv. 2022.159208), titled “The ratio of plant 137 Cs to exchangeable 137 Cs in soil is a crucial factor in explaining the variation in 137 Cs transferability from soil to plant”. To mitigate the radioactive cesium transfer from soil to plant after a nuclear accident, the use of transfer factors (TF: radioactivity of plant/radioactivity of soil) has been widely accepted. However, in 2012–one year after the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident–the Japanese Ministry of Agriculture, Forestry and Fisheries modified this approach. Only TF alone was considered not to be enough to predict the radioactivity in the plant. The same year, as exchangeable potassium (Kex.) level was found to play an important role in regulating TF (Kato et al., 2015), it was decided to apply significant amounts of potassium fertilizer to the contaminated agricultural fields. Its impact was positive, and the ratio of the bags of brown rice exceeding the standard limit (100 Bq kg-1) as compared to the total number of investigated bags decreased from 1.5% in 2011 to 0.0007% in 2012. However, based on a large survey of the relationship between K ex. and the TF of rice (Yamamura et al., 2018), there was a clear difference among soils. TF was found to be generally higher in Hama-dori (located in the eastern region of Fukushima prefecture, where most of the highly contaminated area is located) than in Naka-dori (in the middle of Fukushima prefecture).