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首页> 外文期刊>Environmental Science & Technology >~(137)Cs Trapped by Biomass within 20 km of the Fukushima Daiichi Nuclear Power Plant
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~(137)Cs Trapped by Biomass within 20 km of the Fukushima Daiichi Nuclear Power Plant

机译：在福岛第一核电站20公里内被生物质捕获的〜（137）Cs

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摘要

Analysis of ~(137)Cs trapped in biomass in highly contaminated zones is crucial in predicting the long-term fate of ~(137)Cs following the explosion at the Fukushima Daiichi Nuclear Power Plant. We surveyed forest 20-50 km from the plant in July and September 2011 to evaluate ~(137)Cs trapped in biomass within 20 km of the plant. We determined the ambient dose rate and collected forest soils and twigs at 150 sampling points. Removability from the canopy was evaluated by washing leaves and branches with water and organic solvents. The biomass of the forest canopy was then calculated. ~(137)Cs fallout was simulated with an atmospheric transport model. The modeled dose rate agreed with observations (n = 24) (r = 0.62; p ＜ 0.01). Washing experiments demonstrated that unremovable portions accounted for 53.9 ± 6.496 of ~(137)Cs trapped by deciduous canopy (n - 4) and 59.3 ± 13.8% of ~(137)Cs trapped by evergreen canopy (n = 10). In total, it was estimated that 74.5 × 10~(12) Bq was trapped by canopy in the forest within the no-go zone, with 44.2 × 10~(12) Bq allocated to unremovable portions, and that 0.86% of the total release was trapped in biomass as of September 2011.
机译：对福岛第一核电站爆炸后〜（137）Cs的长期命运的预测至关重要的分析是，在受高度污染的地区捕获生物质中的〜（137）Cs至关重要。我们在2011年7月和2011年9月对距该植物20-50公里的森林进行了调查，以评估在该植物20公里内被生物质捕集的〜（137）Cs。我们确定了环境剂量率，并在150个采样点收集了森林土壤和树枝。通过用水和有机溶剂洗涤树叶和树枝来评估从树冠上的可移动性。然后计算林冠的生物量。用大气传输模型模拟了〜（137）Cs的沉降。建模剂量率与观察结果一致（n = 24）（r = 0.62； p ＜0.01）。洗涤实验表明，不可移动部分占落叶冠层（n-4）捕获的〜（137）Cs的53.9±6.496和常绿冠层（n = 10）捕获的〜（137）Cs的59.3±13.8％。估计在禁区内森林中共有74.5×10〜（12）Bq被树冠困住，其中44.2×10〜（12）Bq被分配到不可移动部分，占总数的0.86％。截至2011年9月，释放被困在生物质中。

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  • 来源
    《Environmental Science & Technology》 |2013年第17期|9612-9618|共7页
  • 作者

    Akio Koizumi; Tamon Niisoe; Kouji H. Harada; Yukiko Fujii; Ayumu Adachi; Toshiaki Hitomi; Hirohiko Ishikawa;

  • 作者单位

    Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan;

    Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan;

    Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan;

    Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan;

    Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan;

    Department of Health and Environmental Sciences, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan;

    Research Division of Atmospheric and Hydrospheric Disasters, Disaster Prevention Research Institute, Kyoto University, Uji 611-0011, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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