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Records of iodine isotopes (I-129, I-127) in the Barkol peat bog from northwest China and their sources, transport and preservation
Zhao, Xue1,2,3; Hou, Xiaolin1,2,4,5; Zhang, Dongliang6; Yang, Yunpeng7; Huang, Zhao1,2,8; Liu, Qi1,2
Corresponding AuthorHou, Xiaolin(xiho@dtu.dk)
2021-09-01
Source PublicationCHEMOSPHERE
ISSN0045-6535
Volume279Pages:8
AbstractThe 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.
KeywordOceanic iodine Iodine-129 Peat sediment Barkol lake Geochemical behavior
DOI10.1016/j.chemosphere.2021.130531
WOS KeywordNUCLEAR ACTIVITIES ; TIME-SERIES ; SEDIMENTS ; SPECIATION ; GEOCHEMISTRY ; CIRCULATION ; ACCIDENT ; SEAWATER ; SEARCH ; CORE
Indexed BySCI ; SCI
Language英语
Funding ProjectChinese Academy of Sciences[XDB40000000] ; Chinese Academy of Sciences[132B61KYSB20180003] ; Natural Science Foundation of China[11875261] ; Natural Science Foundation of China[41991252] ; Ministry of Science and Technology of China[2015FY110800]
WOS Research AreaEnvironmental Sciences & Ecology
Funding OrganizationChinese Academy of Sciences ; Natural Science Foundation of China ; Ministry of Science and Technology of China
WOS SubjectEnvironmental Sciences
WOS IDWOS:000659971200055
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/16802
Collection加速器质谱中心
第四纪科学与全球变化卓越创新中心
Corresponding AuthorHou, Xiaolin
Affiliation1.Chinese Acad Sci, Xian AMS Ctr, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.Shaanxi Key Lab Accelerator Mass Spectrometry Tec, Xian 710061, Peoples R China
3.Xian Inst Innovat Earth Environm Res, Xian 710061, Peoples R China
4.Tech Univ Denmark, Dept Environm Engn, Riso Campus, DK-4000 Roskilde, Denmark
5.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
6.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China
7.Henan Univ, Coll Environm & Planning, Kaifeng 475004, Peoples R China
8.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
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]. CHEMOSPHERE,2021,279:8.
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,279,8.
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):8.
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