Plutonium isotopes in Northern Xinjiang, China: Level, distribution, sources and their contributions

doi:10.1016/j.envpol.2020.114929

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	Plutonium isotopes in Northern Xinjiang, China: Level, distribution, sources and their contributions
	Zhao, Xue 1,2; Qiao, Jixin 1; Hou, Xiaolin 1,2,3,4
通讯作者	Hou, Xiaolin(xiho@dtu.dk)
	2020-10-01
发表期刊	ENVIRONMENTAL POLLUTION
ISSN	0269-7491
卷号	265 页码:11
摘要	Plutonium in the environment has drawn significant attentions due to its radiotoxicity in high concentration and source term linked with nuclear accidents and contaminations. The isotopic ratio of plutonium is source dependent and can be used as a fingerprint to discriminate the sources of radioactive , Pu-239, Pu-240 contaminant. and Cs-137 in surface soil and soil cores collected from Northern Xinjiang were determined in this work. The concentrations of Pu-239,Pu-240 and Cs-137 are in the range of 0.06-1.20 Bq kg(-1), and <1.0-31.4 Bq kg(-1) (decay corrected to Sep. 2017), respectively, falling in the ranges of global fallout in this latitude zone. The Pu-240/Pu-239 atomic ratios of 0.118-0.209 and Pu-239,Pu-240/Cs-137 activity ratios of 0.039-0.215 were measured. Among the investigated sites, distinctly lower Pu-240/Pu-239 atomic ratios of 0.118-0.133 and higher Pu-239,Pu-240/Cs-137 activity ratios of 0.065-0.215 compared to the global fallout values were observed in the northwest part, indicating a significant contribution from other source besides the global fallout. This extra source is mainly attributed to the releases of atmospheric nuclear weapons testing at Semipalatinsk Nuclear Test Site, which was transported by the west and northwest wind through the river valley among mountains in this region. This contribution is estimated to account for 28-43% of the global fallout in the northwest part of Northern Xinjiang. The contribution from the Chinese atmospheric nuclear weapons testing to this region is negligible due to the lack of appropriate wind direction to transport the radioactive releases to this region. (C) 2020 Elsevier Ltd. All rights reserved.
关键词	Pu-239,2(40) Cs-137 Radioactive pollution Nuclear weapons testing Northern Xinjiang
DOI	10.1016/j.envpol.2020.114929
关键词[WOS]	NUCLEAR TEST-SITE ; SOIL-EROSION ; PU ISOTOPES ; LACUSTRINE SEDIMENTS ; FALLOUT PU ; ICE CORE ; CS-137 ; PU-239,PU-240 ; TRACER ; I-129
收录类别	SCI ; SCI
语种	英语
资助项目	Ministry of Science and Technology of China[2015FY110800] ; Natural Science Foundation of China[11605207,11605206,11875261] ; Natural Science Foundation of China[91643206] ; Natural Science Foundation of China[41991252] ; Chinese Academy of Sciences[132B61KYSB20180003] ; Chinese Academy of Sciences[XDB40020104] ; State Key Laboratory of Loess and Quaternary Geology
WOS研究方向	Environmental Sciences & Ecology
项目资助者	Ministry of Science and Technology of China ; Natural Science Foundation of China ; Chinese Academy of Sciences ; State Key Laboratory of Loess and Quaternary Geology
WOS类目	Environmental Sciences
WOS记录号	WOS:000564562000018
出版者	ELSEVIER SCI LTD
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/15996
专题	加速器质谱中心第四纪科学与全球变化卓越创新中心
通讯作者	Hou, Xiaolin
作者单位	1.Tech Univ Denmark, Dept Environm Engn, Riso Campus, DK-4000 Roskilde, Denmark 2.Chinese Acad Sci, Xian AMS Ctr, Inst Earth Environm, State Key Lab Loess & Quaternary Geol,Shaanxi Key, Xian 710061, Peoples R China 3.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 4.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Ocean Continental Climate & Environm, Qingdao 266100, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Xue,Qiao, Jixin,Hou, Xiaolin. Plutonium isotopes in Northern Xinjiang, China: Level, distribution, sources and their contributions[J]. ENVIRONMENTAL POLLUTION,2020,265:11.
APA	Zhao, Xue,Qiao, Jixin,&Hou, Xiaolin.(2020).Plutonium isotopes in Northern Xinjiang, China: Level, distribution, sources and their contributions.ENVIRONMENTAL POLLUTION,265,11.
MLA	Zhao, Xue,et al."Plutonium isotopes in Northern Xinjiang, China: Level, distribution, sources and their contributions".ENVIRONMENTAL POLLUTION 265(2020):11.