Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-19-10319-2019 |
Distinctions in source regions and formation mechanisms of secondary aerosol in Beijing from summer to winter | |
Duan, Jing1; 39; Dowd, Colin D.; Cao, Junji | |
2019-08-14 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:15页码:10319-10334 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Ireland; Netherlands; USA |
英文摘要 | To investigate the sources and evolution of haze pollution in different seasons, long-term (from 15 August to 4 December 2015) variations in chemical composition of PM1 were characterized in Beijing, China. Positive matrix factorization (PMF) analysis with a multi-linear engine (ME-2) resolved three primary and two secondary organic aerosol (OA) sources, including hydrocarbon-like OA (HOA), cooking OA (COA), coal combustion OA (CCOA), local secondary OA (LSOA) and regional SOA (RSOA). The sulfate source region analysis implies that sulfate was mainly transported at a large regional scale in late summer, while local and/or nearby sulfate formation may be more important in winter. Meanwhile, distinctly different correlations between sulfate and RSOA or LSOA (i.e., better correlation with RSOA in late summer, similar correlations with RSOA and LSOA in autumn, and close correlation with LSOA in early winter) confirmed the regional characteristic of RSOA and local property of LSOA. Secondary aerosol species including secondary inorganic aerosol (SIA - sulfate, nitrate, and ammonium) and SOA (LSOA and RSOA) dominated PM1 during all three seasons. In particular, SOA contributed 46% to total PM1 (with 31% as RSOA) in late summer, whereas SIA contributed 41% and 45% to total PM1 in autumn and early winter, respectively. Enhanced contributions of secondary species (66 %-76% of PM1) were also observed in pollution episodes during all three seasons, further emphasizing the importance of secondary formation processes in haze pollution in Beijing. Combining chemical composition and meteorological data, our analyses suggest that both photochemical oxidation and aqueous-phase processing played important roles in SOA formation during all three seasons, while for sulfate formation, gas-phase photochemical oxidation was the major pathway in late summer, aqueous-phase reactions were more responsible during early winter and both processes had contributions during autumn. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000481687100003 |
WOS关键词 | POSITIVE MATRIX FACTORIZATION ; RESOLVED CHEMICAL-CHARACTERIZATION ; SOURCE APPORTIONMENT ; ORGANIC AEROSOL ; HIGH-RESOLUTION ; SEASONAL-VARIATIONS ; SPECIATION MONITOR ; FINE PARTICLES ; HAZE POLLUTION ; AIR-POLLUTION |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/185966 |
专题 | 地球科学 |
作者单位 | 1.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Shaanxi, Peoples R China; 2.Chinese Acad Sci, Inst Earth Environm, KLACP, Xian 710061, Shaanxi, Peoples R China; 3.Chinese Acad Sci, CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China; 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 5.Natl Univ Ireland Galway, Sch Phys, Univ Rd, Galway, Ireland; 6.Natl Univ Ireland Galway, Ctr Climate & Air Pollut Studies, Ryan Inst, Univ Rd, Galway, Ireland; 7.Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China; 8.Univ Groningen, CIO, ESRIG, Groningen, Netherlands; 9.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China; 10.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Taipa, Macau, Peoples R China; 11.Aerodyne Res Inc, Billerica, MA USA |
推荐引用方式 GB/T 7714 | Duan, Jing,39;Dowd, Colin D.;Cao, Junji. Distinctions in source regions and formation mechanisms of secondary aerosol in Beijing from summer to winter[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(15):10319-10334. |
APA | Duan, Jing,&39;Dowd, Colin D.;Cao, Junji.(2019).Distinctions in source regions and formation mechanisms of secondary aerosol in Beijing from summer to winter.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(15),10319-10334. |
MLA | Duan, Jing,et al."Distinctions in source regions and formation mechanisms of secondary aerosol in Beijing from summer to winter".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.15(2019):10319-10334. |
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