Unraveling the process of aerosols secondary formation and removal based on cosmogenic beryllium-7 and beryllium-10 | |
Liu, Xuke1,2,3,4; Fu, Yunchong1,2,5; Wang, Qiyuan1; Bi, Yanting4; Zhang, Li1,2; Zhao, Guoqing1,2; Xian, Feng1,2; Cheng, Peng1,2,5; Zhang, Luyuan1,2; Zhou, Jiamao1; Zhou, Weijian1,2,4,5 | |
通讯作者 | Fu, Yunchong(fuyc@ieecas.cn) ; Zhou, Weijian(weijian@loess.llqg.ac.cn) |
2022-05-15 | |
发表期刊 | SCIENCE OF THE TOTAL ENVIRONMENT |
ISSN | 0048-9697 |
卷号 | 821页码:9 |
摘要 | The secondary formation and diffusion processes of aerosol are extraordinarily complex and significantly impact the environment and human health. Therefore, exploring the process of aerosol formation and diffusion based on independent new tracer has always been a concern. The Be-7 and Be-10, which are generated only by the action of cosmic rays, are chemically stable and adsorbed on aerosol for transmission, so they have the potential characteristics of aerosol tracers. Here, we obtained the daily resolution atmospheric Be-7, Be-10, and Be-10/Be-7 without dust interference in Xi'an autumn and winter (heavy pollution period in a typical polluted area) by accelerator mass spectrometry. It is found that during the rapid formation of secondary aerosols (SA) under the stable Be-10/Be-7 ratio, which indicates the stable atmospheric vertical structure, the concentration of Be-7 and Be-10 is significantly negatively correlated (R-2 > 0.9) with the aerosol concentration. Therefore, SA relative content in aerosols can be estimated by the dilution amount of Be-7 and Be-10 to reveal the secondary-formation process of aerosol (33% average contribution to aerosols during the winter heavy air pollution period). Furthermore, we also revealed the physical removal process of aerosols based on Be-7, Be-10, and Be-10/Be-7, including precipitation removal and diffusion of vertical atmospheric movement caused by stratospheric air intrusion. In summary, meteoric cosmogenic 7Be and 10Be will provide a new way to study the secondary chemical formation and physical removal of aerosols. |
关键词 | PM2.5 Be-7 Be-10 Secondary aerosol Rain washout Stratospheric air intrusion |
DOI | 10.1016/j.scitotenv.2022.153293 |
关键词[WOS] | AIR-POLLUTION ; METEOROLOGICAL CONDITIONS ; ATMOSPHERIC DEPOSITION ; CHEMICAL-COMPOSITION ; GUANZHONG BASIN ; HAZE ; TRANSPORT ; PB-210 ; PM2.5 ; DUST |
收录类别 | SCI ; SCI |
语种 | 英语 |
资助项目 | Strategic Priority Research Program of Chinese Academy of Sciences[XDB40000000] ; National Natural Science Foundation of China[11975240] ; Youth Innovation Promotion Association CAS |
WOS研究方向 | Environmental Sciences & Ecology |
项目资助者 | Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS |
WOS类目 | Environmental Sciences |
WOS记录号 | WOS:000766810600009 |
出版者 | ELSEVIER |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ieecas.cn/handle/361006/17554 |
专题 | 加速器质谱中心 |
通讯作者 | Fu, Yunchong; Zhou, Weijian |
作者单位 | 1.Chinese Acad Sci IEECAS, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 2.Xian AMS Ctr IEECAS, Shaanxi Key Lab Accelerator Mass Spectrometry Tec, Xian 710061, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Xian Earth Environm Innovat Res Inst, Xian 710061, Peoples R China 5.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Xuke,Fu, Yunchong,Wang, Qiyuan,et al. Unraveling the process of aerosols secondary formation and removal based on cosmogenic beryllium-7 and beryllium-10[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,821:9. |
APA | Liu, Xuke.,Fu, Yunchong.,Wang, Qiyuan.,Bi, Yanting.,Zhang, Li.,...&Zhou, Weijian.(2022).Unraveling the process of aerosols secondary formation and removal based on cosmogenic beryllium-7 and beryllium-10.SCIENCE OF THE TOTAL ENVIRONMENT,821,9. |
MLA | Liu, Xuke,et al."Unraveling the process of aerosols secondary formation and removal based on cosmogenic beryllium-7 and beryllium-10".SCIENCE OF THE TOTAL ENVIRONMENT 821(2022):9. |
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