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Anthropogenic I-129 in the sediment cores in the East China sea: Sources and transport pathways
Zhao, X (Zhao, Xue1,5; Hou, XL (Hou, Xiaolin)1,2,4; Du, JZ (Du, Jinzhou)3; Fan, YK (Fan, Yukun)1
2019-02
Source PublicationENVIRONMENTAL POLLUTION
Volume245Pages:443-452
Contribution Rank1
AbstractWith the increased numbers of nuclear power plants constructed along the east coast of China, it is important to know radioactive sources and transport pathways between land and sea, in order to better understand the impact of these nuclear facilities to the marine environment. Two sediment cores collected from the East China Sea dated to 1959-2010 were analyzed for long-lived radioactive I-129 and stable I-127. It was observed that I-129 levels (I-129/I-127 ratio of (15.0-75.0) x 10(-12)) were significantly increased compared to the pre-nuclear value (I-129/I-127 = 1.5 x 10(-12)). Some I-129 peaks were observed in layers of 1959, 1966, 1971 and 1976 (1977), corresponding to the atmospheric nuclear weapon tests at Pacific Proving Grounds and Lop Nor. The high values of I-129 after the late 1970s are attributed to the releases from the European reprocessing plants. In addition to ocean current transport, the atmospheric dispersion through the interaction of the Westerlies with East Asia monsoon is the important pathway of large-scale transport of pollutants from high latitude West Europe to middle latitude East Asia. Riverine input is the main transport pathway of radioactive pollutants released from Lop Nor to the East China Sea through the atmospheric dispersion, deposition and runoff processes.
KeywordNUCLEAR ACTIVITIES ATMOSPHERIC FALLOUT WATER MASSES RECORD I-129/I-127 ACCIDENT PU CIRCULATION (129)IODINE ISOTOPES
Indexed BySCI ; SCIE
Language英语
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/10967
Collection加速器质谱中心
Affiliation1.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Xian AMS Ctr,Inst Earth Environm, Shaanxi Key Lab Accelerator Mass Spectrometry Tec, Xian 710061, Shaanxi, Peoples R China;
2.Tech Univ Denmark, Ctr Nucl Technol, Riso Campus, DK-4000 Roskilde, Denmark;
3.East China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 200062, Peoples R China;
4.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Ocean Continental Climate & Environm, Qingdao 266100, Peoples R China;
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhao, X (Zhao, Xue,Hou, XL ,Du, JZ ,et al. Anthropogenic I-129 in the sediment cores in the East China sea: Sources and transport pathways[J]. ENVIRONMENTAL POLLUTION,2019,245:443-452.
APA Zhao, X ,Hou, XL ,Du, JZ ,&Fan, YK .(2019).Anthropogenic I-129 in the sediment cores in the East China sea: Sources and transport pathways.ENVIRONMENTAL POLLUTION,245,443-452.
MLA Zhao, X ,et al."Anthropogenic I-129 in the sediment cores in the East China sea: Sources and transport pathways".ENVIRONMENTAL POLLUTION 245(2019):443-452.
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