RADIOACTIVE POLLUTION FROM FUKUSHIMA DAIICHI NUCLEAR POWER PLANT IN THE TERRESTRIAL ENVIRONMENT
RADIOACTIVE POLLUTION FROM FUKUSHIMA DAIICHI NUCLEAR POWER PLANT IN THE TERRESTRIAL ENVIRONMENT
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DOI：
10.1093/rpd/ncs222
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发表时间：
2012-01-01
影响因子：
1
通讯作者：
Yamada, M.
中科院分区：
文献类型：
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作者：
Tazoe, H.;Hosoda, M.;Yamada, M.
2011 年 3 月 12 日至 15 日期间福岛第一核反应堆排放和氢气爆炸产生的主要污染物向西北输送，并通过降水沉积在土壤和植物上。在福岛县的 64 个地点对表层土壤和植物叶子进行了采样。表层土壤中Cs-134（84.4 kBq kg(-1)）和Cs-137（82.0 kBq kg(-1)）浓度最高的是位于福岛第一核电站西北32公里的lidate村Nagaadoro。此外，在同一样品中还检测到I-131、Te-129、Te-129m、Ag-110m和La-140。在浪江町的对马岛和南对马岛高剂量率地区，竹子、卷心菜和草等植物叶子的外表面受到严重污染。污染事件后生长的艾叶中放射性核素浓度极低；然而，植物/土壤放射性铯比率为 0.023 +/- 0.006。预计落叶的分解将促进环境中放射性核素的回收。
Major contaminants from venting and hydrogen explosions at the Fukushima Daiichi nuclear reactors between 12 and 15 March 2011 were transported northwestward and deposited on soil and plants via precipitation. Surface soils and plant leaves were sampled at 64 sites in the Fukushima Prefecture. The highest concentrations of Cs-134 (84.4 kBq kg(-1)) and Cs-137 (82.0 kBq kg(-1)) in surface soils were observed at Nagadoro in lidate village located 32 km northwest from the Fukushima Daiichi nuclear power plant. Furthermore, I-131, Te-129, Te-129m, Ag-110m and La-140 were detected in the same samples. Outer surface of plant leaves, such as bamboo, cabbage and grasses were highly contaminated at the high-dose rate areas of Tsushima and Minami-Tsushima in Namie town. Mugwort leaves that grew after the pollution event had extremely low concentration of radionuclides; however, the plant/soil radiocaesium ratio was 0.023 +/- 0.006. It is anticipated that decomposition of fallen leaves will promote recycling of radionuclides in the environment.