Summertime and wintertime atmospheric processes of secondary aerosol in Beijing
文献类型:期刊论文
作者 | Duan, Jing4,5,7; Huang, Ru-Jin5,7; Li, Yongjie8; Chen, Qi9; Zheng, Yan9; Chen, Yang10; Lin, Chunshui5,7; Ni, Haiyan5,7; Wang, Meng5,7; Ovadnevaite, Jurgita1,11 |
刊名 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
出版日期 | 2020-03-31 |
卷号 | 20期号:6页码:3793-3807 |
ISSN号 | 1680-7316 |
DOI | 10.5194/acp-20-3793-2020 |
英文摘要 | Secondary aerosol constitutes a large fraction of fine particles in urban air of China. However, its formation mechanisms and atmospheric processes remain largely uncertain despite considerable study in recent years. To elucidate the seasonal variations in fine-particle composition and secondary aerosol formation, an Aerodyne quadrupole aerosol chemical speciation monitor (Q-ACSM), combined with other online instruments, was used to characterize the sub-micrometer particulate matter (diameter < 1 mu m, PM1) in Beijing during summer and winter 2015. Our results suggest that photochemical oxidation was the major pathway for sulfate formation during summer, whereas aqueous-phase reaction became an important process for sulfate formation during winter. High concentrations of nitrate (17% of the PM1 mass) were found during winter, explained by enhanced gas-to-particle partitioning at low temperature, while high nitrate concentrations (19 %) were also observed under the conditions of high relative humidity (RH) during summer, likely due to the hydrophilic property of NH4NO3 and hydrolysis of N2O5. As for organic aerosol (OA) sources, secondary OA (SOA) dominated the OA mass (74 %) during summer, while the SOA contribution decreased to 39% during winter due to enhanced primary emissions in the heating season. In terms of the SOA formation, photochemical oxidation perhaps played an important role for summertime oxygenated OA (OOA) formation and less-oxidized wintertime OOA (LO-OOA) formation. The wintertime more-oxidized OOA (MO-OOA) showed a good correlation with aerosol liquid water content (ALWC), indicating a more important contribution of aqueous-phase processing over photochemical production to MO-OOA. Meanwhile, the dependence of LO-OOA and the mass ratio of LO-OOA to MO-OOA on atmospheric oxidative tracer (i.e., O-x) both degraded when RH was greater than 60 %, suggesting that RH or aerosol liquid water may also affect LO-OOA formation. |
WOS关键词 | CHEMICAL-COMPOSITION ; SOURCE APPORTIONMENT ; SUBMICRON AEROSOLS ; ORGANIC AEROSOL ; SEVERE HAZE ; SEASONAL-VARIATIONS ; MULTILINEAR ENGINE ; CHINA ; POLLUTION ; EVOLUTION |
资助项目 | National Natural Science Foundation of China (NSFC)[41925015] ; National Natural Science Foundation of China (NSFC)[91644219] ; National Natural Science Foundation of China (NSFC)[41877408] ; National Natural Science Foundation of China (NSFC)[21661132005] ; Chinese Academy of Sciences[ZDBS-LY-DQC001] ; National Key Research and Development Program of China[2017YFC0212701] ; Cross Innovative Team fund from the State Key Laboratory of Loess and Quaternary Geology (SKL-LQG)[SKLLQGTD1801] |
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:000522825000001 |
资助机构 | National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences ; National Key Research and Development Program of China ; Cross Innovative Team fund from the State Key Laboratory of Loess and Quaternary Geology (SKL-LQG) |
源URL | [http://ir.ieecas.cn/handle/361006/12524] |
专题 | 地球环境研究所_粉尘与环境研究室 第四纪科学与全球变化卓越创新中心 |
通讯作者 | Huang, Ru-Jin; Chen, Qi |
作者单位 | 1.Natl Univ Ireland Galway, Ctr Climate & Air Pollut Studies, Ryan Inst, Univ Rd, Galway H91 CF50, Ireland 2.Natl Ctr Nanosci & Technol, CAS Key Lab Biol Effects Nanomat & Nanosafety, Beijing 100191, Peoples R China 3.Aerodyne Res Inc, Billerica, MA 01821 USA 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 6.Johannes Gutenberg Univ Mainz, Inst Inorgan & Analyt Chem, Duesbergweg 10-14, D-55128 Mainz, Germany 7.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China 8.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Taipa 999078, Macao, Peoples R China 9.Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China 10.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China |
推荐引用方式 GB/T 7714 | Duan, Jing,Huang, Ru-Jin,Li, Yongjie,et al. Summertime and wintertime atmospheric processes of secondary aerosol in Beijing[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(6):3793-3807. |
APA | Duan, Jing.,Huang, Ru-Jin.,Li, Yongjie.,Chen, Qi.,Zheng, Yan.,...&Cao, Junji.(2020).Summertime and wintertime atmospheric processes of secondary aerosol in Beijing.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(6),3793-3807. |
MLA | Duan, Jing,et al."Summertime and wintertime atmospheric processes of secondary aerosol in Beijing".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.6(2020):3793-3807. |
入库方式: OAI收割
来源:地球环境研究所
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