干旱区生态环境知识资源中心(Arid): Records of iodine isotopes (I-129, I-127) in the Barkol peat bog from northwest China and their sources, transport and preservation

Arid

DOI	10.1016/j.chemosphere.2021.130531
	Records of iodine isotopes (I-129, I-127) in the Barkol peat bog from northwest China and their sources, transport and preservation
	Zhao, Xue; Hou, Xiaolin; Zhang, Dongliang; Yang, Yunpeng; Huang, Zhao; Liu, Qi
通讯作者	Hou, XL (corresponding author), Chinese Acad Sci, Xian AMS Ctr, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China. ; Hou, XL (corresponding author), Shaanxi Key Lab Accelerator Mass Spectrometry Tec, Xian 710061, Peoples R China.
来源期刊	CHEMOSPHERE
ISSN	0045-6535
EISSN	1879-1298
出版年	2021
卷号	279
英文摘要	The research on geochemical behaviors of iodine is significant for deep understanding of the source and distribution of iodine on the earth. However, as one of the most important sources, the ocean emissions and relative transport pathways of iodine, as well as the preservation after deposition are still not well known, especially in the arid areas of central Asia. A peat sediment core collected nearby Barkol Lake from northwest China was analyzed for iodine isotopes (I-127 and I-129). The observed high I-127 concentration in the top 2 cm indicated a significant accumulation of iodine in the surface oxic conditions due to the continuous sources of incompletely decomposed organic matter. Dissociation of iodine into pore waters occurred once the anoxic conditions established beneath the surface by a serial reduction reaction during the degradation of organic matter. The temporal variation of anthropogenic I-129 in the peat sediment recorded its sources and transport pathways. Besides the global fallout I-129 during late 1950s and early 1960s, the significantly increased air releases from the European nuclear fuel reprocessing plants during 1975-1997 and the increased marine discharges since 1990s contributed the major portion of I-129 in the peat core. The major transport pathway of I-129 from the Europe was through Westerlies following the re-emission of the marine discharged I-129 to the atmosphere, indicating a clearly ocean emitted iodine in the concerned central Asia. (C) 2021 Elsevier Ltd. All rights reserved.
英文关键词	Oceanic iodine Iodine-129 Peat sediment Barkol lake Geochemical behavior
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000659971200055
WOS关键词	NUCLEAR ACTIVITIES ; TIME-SERIES ; SEDIMENTS ; SPECIATION ; GEOCHEMISTRY ; CIRCULATION ; ACCIDENT ; SEAWATER ; SEARCH ; CORE
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	中国科学院新疆生态与地理研究所 ; 中国科学院地球环境研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349842
作者单位	[Zhao, Xue; Hou, Xiaolin; Huang, Zhao; Liu, Qi] Chinese Acad Sci, Xian AMS Ctr, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China; [Zhao, Xue; Hou, Xiaolin; Huang, Zhao; Liu, Qi] Shaanxi Key Lab Accelerator Mass Spectrometry Tec, Xian 710061, Peoples R China; [Zhao, Xue] Xian Inst Innovat Earth Environm Res, Xian 710061, Peoples R China; [Hou, Xiaolin] Tech Univ Denmark, Dept Environm Engn, Riso Campus, DK-4000 Roskilde, Denmark; [Hou, Xiaolin] CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China; [Zhang, Dongliang] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; [Yang, Yunpeng] Henan Univ, Coll Environm & Planning, Kaifeng 475004, Peoples R China; [Huang, Zhao] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Xue,Hou, Xiaolin,Zhang, Dongliang,et al. Records of iodine isotopes (I-129, I-127) in the Barkol peat bog from northwest China and their sources, transport and preservation[J]. 中国科学院新疆生态与地理研究所, 中国科学院地球环境研究所,2021,279.
APA	Zhao, Xue,Hou, Xiaolin,Zhang, Dongliang,Yang, Yunpeng,Huang, Zhao,&Liu, Qi.(2021).Records of iodine isotopes (I-129, I-127) in the Barkol peat bog from northwest China and their sources, transport and preservation.CHEMOSPHERE,279.
MLA	Zhao, Xue,et al."Records of iodine isotopes (I-129, I-127) in the Barkol peat bog from northwest China and their sources, transport and preservation".CHEMOSPHERE 279(2021).