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The formation and evolution of parent and oxygenated polycyclic aromatic hydrocarbons during a severe winter haze-fog event over Xi'an, China

文献类型：期刊论文

作者Lei, Yali1,2; Shen, Zhenxing1,2; He, Kun1; Li, Lijuan2; Qin, Yiming3; Zeng, Yaling1; Li, Jianjun2; Xu, Hongmei1; Ma, Yongjing4,5; Zhang, Tian1
刊名ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
出版日期2020-10-31
页码8
ISSN号0944-1344
关键词pPAHs OPAHs High-time resolution Chemical aging Xi’ an
DOI10.1007/s11356-020-10923-9
通讯作者Shen, Zhenxing(zxshen@mail.xjtu.edu.cn)
英文摘要In this study, 3- or 4-h high time-resolved PM2.5 was observed during a severe winter haze-fog event (1 to 6 January 2017) to investigate the formation and evolution of parent polycyclic aromatic hydrocarbons (pPAHs) and oxygenated polycyclic aromatic hydrocarbons (OPAHs) in Xi'an, a typical city in northwestern China. Three episodes (episode I, episode II, and rainy day (EI, EII, and RD)) have been identified during this haze-fog event. Nine water-soluble ions, 8 carbonaceous fractions, 18 pPAHs, and 3 OPAHs in PM2.5 were measured. pPAHs showed two peaks at around 12:00 local standard time (LST) and 24:00 LST and two troughs at around 2:00 LST and 18:00 LST during EI. However, the OPAHs presented highest at around 18:00 LST and lowest at around 2:00 LST. During EII, pPAHs and OPAHs displayed similar diurnal variations with the highest values at noon but lowest values at around 2:00-5:00 LST. In addition, no obvious diurnal variations of pPAHs and OPAHs were observed during RD were absent during RD. Diurnal variations of pPAH ring distributions demonstrated coal combustion, and vehicle emissions contributed to pPAHs for three episodes, which is further confirmed by diagnostic ratio results. High oxygenation (R-o) rates were found during the sampling time, which favored OPAH formation. The study herein indicates that OPAH formation through complex atmospheric reactions provides us new insights into the severe haze-fog events.
WOS关键词FINE PARTICULATE MATTER ; PM2.5 CONCENTRATIONS ; SIZE DISTRIBUTION ; AMBIENT AEROSOL ; HEALTH-RISK ; PAHS ; URBAN ; EPISODES ; IDENTIFICATION ; INVENTORY
资助项目Natural Science Foundation of China[41877383] ; Natural Science Foundation of China[91644219] ; Natural Science Foundation of China[21661132005] ; SKLLQG, the Chinese Academy of Sciences[SKLLQG1919] ; Shaanxi province key research and development plan key industrial chain (group) project[2018ZDCXL-SF-0205]
WOS研究方向Environmental Sciences & Ecology
语种英语
出版者SPRINGER HEIDELBERG
WOS记录号WOS:000583130100001
资助机构Natural Science Foundation of China ; SKLLQG, the Chinese Academy of Sciences ; Shaanxi province key research and development plan key industrial chain (group) project
源URL[http://ir.ieecas.cn/handle/361006/15482]  
专题地球环境研究所_粉尘与环境研究室
通讯作者Shen, Zhenxing
作者单位1.Xi An Jiao Tong Univ, Environm Sci & Engn, Xian 710049, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
3.Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA
4.Lanzhou Univ, Coll Atmospher Sci, Key Lab Arid Climat Change & Reducing Disaster Ga, Lanzhou 730000, Peoples R China
5.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Lei, Yali,Shen, Zhenxing,He, Kun,et al. The formation and evolution of parent and oxygenated polycyclic aromatic hydrocarbons during a severe winter haze-fog event over Xi'an, China[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2020:8.
APA Lei, Yali.,Shen, Zhenxing.,He, Kun.,Li, Lijuan.,Qin, Yiming.,...&Cao, Junji.(2020).The formation and evolution of parent and oxygenated polycyclic aromatic hydrocarbons during a severe winter haze-fog event over Xi'an, China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,8.
MLA Lei, Yali,et al."The formation and evolution of parent and oxygenated polycyclic aromatic hydrocarbons during a severe winter haze-fog event over Xi'an, China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH (2020):8.

入库方式： OAI收割

来源：地球环境研究所

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