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Iodine isotopes in precipitation: Four-year time series variations before and after 2011 Fukushima nuclear accident
Xu, Sheng1,3; Zhang, Luyuan2,4; Freeman, Stewart P. H. T.1; Hou, Xiaolin2; Watanabe, Akira3; Sanderson, David C. W.1; Cresswell, Alan1,3; Yamaguchi, Katsuhiko3
2016-05-01
发表期刊JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
卷号155期号:2016页码:38-45
文章类型Article
摘要Rainwater samples were collected monthly from Fukushima, Japan, in 2012-2014 and analysed for I-127 and I-129. These are combined with previously reported data to investigate atmospheric levels and behaviour of Fukushima-derived I-129 before and after the 2011 nuclear accident. In the new datasets, I-127 and I-129 concentrations between October 2012 and October 2014 varied from 0.5 to 10 mu g/L and from 1.2 x 10(8) to 6.9 x 10(9) atoms/L respectively, resulting in I-129/I-127 atomic ratio ranges from 3 x 10(-8) to 2 x 10(-7). The I-129 concentrations were in good agreement with those in the previous period from March 2011 to September 2012, whereas the I-129 concentrations and I-129/I-127 ratios followed declining trends since the accident. Although I-129 concentrations in five samples during the period of 2013-2014 have approached the pre-accident levels, I-129 concentrations in most samples remained higher values in winter and spring-summer. The high I-129 levels in winter and spring-summer are most likely attributed to local resuspension of the Fukushima-derived radionuclide-bearing fine soil particles deposited on land surfaces, and re-emission through vegetation taking up I-129 from contaminated soil and water, respectively. Long-term declining rate suggests that contribution of the Fukushima-derived I-129 to the atmosphere would become less since 2014. (C) 2016 Elsevier Ltd. All rights reserved.
关键词Fukushima-derived I-129 I-129/i-127 Long-term Variation Rainwater Fukushima Nuclear Accident
WOS标题词Science & Technology ; Life Sciences & Biomedicine
DOI10.1016/j.jenvrad.2016.02.011
关键词[WOS]POWER-PLANT ACCIDENT ; REPROCESSING FACILITIES ; ENVIRONMENTAL-SAMPLES ; ATMOSPHERIC FALLOUT ; I-129 ; JAPAN ; SOIL ; RADIONUCLIDES ; CS-137 ; VOLATILIZATION
收录类别SCI
语种英语
WOS研究方向Environmental Sciences & Ecology
WOS类目Environmental Sciences
WOS记录号WOS:000374358100006
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5771
专题加速器质谱中心
作者单位1.Scottish Univ, Environm Res Ctr, E Kilbride G75 0QF, Lanark, Scotland
2.Tech Univ Denmark, Ctr Nucl Technol, DK-4000 Roskilde, Denmark
3.Fukushima Univ, Fukushima 9601296, Japan
4.Chinese Acad Sci, Inst Earth Environm, Xian AMS Ctr, SKLLQG, Xian 710061, Peoples R China
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Xu, Sheng,Zhang, Luyuan,Freeman, Stewart P. H. T.,et al. Iodine isotopes in precipitation: Four-year time series variations before and after 2011 Fukushima nuclear accident[J]. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY,2016,155(2016):38-45.
APA Xu, Sheng.,Zhang, Luyuan.,Freeman, Stewart P. H. T..,Hou, Xiaolin.,Watanabe, Akira.,...&Yamaguchi, Katsuhiko.(2016).Iodine isotopes in precipitation: Four-year time series variations before and after 2011 Fukushima nuclear accident.JOURNAL OF ENVIRONMENTAL RADIOACTIVITY,155(2016),38-45.
MLA Xu, Sheng,et al."Iodine isotopes in precipitation: Four-year time series variations before and after 2011 Fukushima nuclear accident".JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 155.2016(2016):38-45.
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