Temporal variation in I-129 and I-127 in aerosols from Xi'an, China: influence of East Asian monsoon and heavy haze events

doi:10.5194/acp-20-2623-2020

	Temporal variation in I-129 and I-127 in aerosols from Xi'an, China: influence of East Asian monsoon and heavy haze events
	Zhang, Luyuan 2,3,4; Hou, Xiaolin 1,2,3,4; Xu, Sheng 5; Feng, Tian 3; Cheng, Peng 3; Fu, Yunchong 3; Chen, Ning 3
刊名	ATMOSPHERIC CHEMISTRY AND PHYSICS
	2020-03-03
卷号	20 期号:4 页码:2623-2635
ISSN号	1680-7316
DOI	10.5194/acp-20-2623-2020
通讯作者	Zhang, Luyuan(zhangluyuan.118@163.com)
英文摘要	Aerosol iodine isotopes are pivotal links in atmospheric circulation of iodine in both atmospheric and nuclear sciences, while their sources, temporal change and transport mechanism are still not well understood. This work presents the day-resolution temporal variation in iodine-129 (I-129) and iodine-127 (I-127) concentrations in aerosols from Xi'an, north-west China, during 2017/18. Both iodine isotopes have significant fluctuations with time, showing the highest levels in winter, approximately 2-3 times higher than in other seasons, but the correlation between I-129 and I-127 concentrations reflects that they have different sources. Aerosol I-127 concentrations are found to be noticeably positively correlated with air quality index and five air pollutants. Enhanced fossil fuel combustion and inverse weather conditions can explain the increased concentrations and peaks of I-127 in winter. The change in I-129 concentrations confirms that the source and level of I-129 in the monsoonal region were alternatively dominated by the I-129-enriched East Asian winter monsoon and the I-129-poor East Asian summer monsoon. The mean I-129/I-127 number ratio of (92.7 +/- 124) x 10(-10) provides an atmospheric background level for the purpose of nuclear environmental safety monitoring. This study suggests that locally discharged stable(127)I and externally input I-129 are likely involved in fine particles formation in urban air, which provides insights into the long-range transport of air pollutants and iodine's role in particulate formation in urban atmosphere.
资助项目	National Natural Science Foundation of China[11605207] ; National Natural Science Foundation of China[41603125] ; National Natural Science Foundation of China[41991252] ; Youth Innovation Promotion Association of CAS[2019401] ; Ministry of Science and Technology basic project[2015FY110800] ; Bureau of International Co-operation, CAS[132B61KYSB20180003] ; National Research Program for Key Issues in Air Pollution Control[DQGG0105]
WOS关键词	ATMOSPHERIC IODINE ; NUCLEAR ACTIVITIES ; FUKUSHIMA ; PRECIPITATION ; SPECIATION ; EMISSIONS ; ISOTOPES ; SAMPLES ; RECORD ; CYCLE
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:000518792900001
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS ; Ministry of Science and Technology basic project ; Bureau of International Co-operation, CAS ; National Research Program for Key Issues in Air Pollution Control
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/12628]
专题	地球环境研究所_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	Zhang, Luyuan
作者单位	1.Tech Univ Denmark, Ctr Nucl Technol, Riso Campus, DK-4000 Roskilde, Denmark 2.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Ocean Continental Climate & Environm, Qingdao 266061, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, Xian AMS Ctr, State Key Lab Loess & Quaternary Geol,Shaanxi Key, Xian 710061, Peoples R China 4.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 5.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Luyuan,Hou, Xiaolin,Xu, Sheng,et al. Temporal variation in I-129 and I-127 in aerosols from Xi'an, China: influence of East Asian monsoon and heavy haze events[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(4):2623-2635.
APA	Zhang, Luyuan.,Hou, Xiaolin.,Xu, Sheng.,Feng, Tian.,Cheng, Peng.,...&Chen, Ning.(2020).Temporal variation in I-129 and I-127 in aerosols from Xi'an, China: influence of East Asian monsoon and heavy haze events.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(4),2623-2635.
MLA	Zhang, Luyuan,et al."Temporal variation in I-129 and I-127 in aerosols from Xi'an, China: influence of East Asian monsoon and heavy haze events".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.4(2020):2623-2635.