Primary and secondary aerosols in beijing in winter: sources, variations and processes
文献类型：期刊论文
| 作者 | Sun, Yele1,2; Du, Wei1,3; Fu, Pingqing1; Wang, Qingqing1; Li, Jie1; Ge, Xinlei4; Zhang, Qi5; Zhu, Chunmao6,7; Ren, Lujie1; Xu, Weiqi1,3 |
| 刊名 | Atmospheric chemistry and physics
 |
| 出版日期 | 2016 |
| 卷号 | 16期号:13页码:8309-8329 |
| ISSN号 | 1680-7316 |
| DOI | 10.5194/acp-16-8309-2016 |
| 通讯作者 | Sun, yele(sunyele@mail.iap.ac.cn) |
| 英文摘要 | Winter has the worst air pollution of the year in the megacity of beijing. despite extensive winter studies in recent years, our knowledge of the sources, formation mechanisms and evolution of aerosol particles is not complete. here we have a comprehensive characterization of the sources, variations and processes of submicron aerosols that were measured by an aerodyne high-resolution aerosol mass spectrometer from 17 december 2013 to 17 january 2014 along with offline filter analysis by gas chromatography/mass spectrometry. our results suggest that submicron aerosols composition was generally similar across the winter of different years and was mainly composed of organics (60 %), sulfate (15 %) and nitrate (11 %). positive matrix factorization of high-and unit-mass resolution spectra identified four primary organic aerosol (poa) factors from traffic, cooking, biomass burning (bboa) and coal combustion (ccoa) emissions as well as two secondary oa (soa) factors. poa dominated oa, on average accounting for 56 %, with ccoa being the largest contributor (20 %). both ccoa and bboa showed distinct polycyclic aromatic hydrocarbons (pahs) spectral signatures, indicating that pahs in winter were mainly from coal combustion (66 %) and biomass burning emissions (18 %). bboa was highly correlated with levoglucosan, a tracer compound for biomass burning (r(2) = 0.93), and made a considerable contribution to oa in winter (9 %). an aqueous-phase-processed soa (aq-ooa) that was strongly correlated with particle liquid water content, sulfate and s-containing ions (e.g. ch2so2+) was identified. on average aq-ooa contributed 12% to the total oa and played a dominant role in increasing oxidation degrees of oa at high rh levels (>50 %). our results illustrate that aqueous-phase processing can enhance soa production and oxidation states of oa as well in winter. further episode analyses highlighted the significant impacts of meteorological parameters on aerosol composition, size distributions, oxidation states of oa and evolutionary processes of secondary aerosols. |
| WOS关键词 | POLYCYCLIC AROMATIC-HYDROCARBONS ; THERMODYNAMIC-EQUILIBRIUM MODEL ; POSITIVE MATRIX FACTORIZATION ; RESOLUTION MASS-SPECTROMETRY ; ORGANIC SOURCE APPORTIONMENT ; NORTH CHINA PLAIN ; NEW-YORK-CITY ; CHEMICAL-COMPOSITION ; INORGANIC AEROSOLS ; SUBMICRON AEROSOLS |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | COPERNICUS GESELLSCHAFT MBH |
| WOS记录号 | WOS:000381091400016 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2375427 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Sun, Yele |
| 作者单位 | 1.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China 4.Nanjing Univ Informat Sci & Technol, Sch Environm Sci & Engn, Nanjing 210044, Jiangsu, Peoples R China 5.Univ Calif Davis, Dept Environm Toxicol, 1 Shields Ave, Davis, CA 95616 USA 6.Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido 0600819, Japan 7.Nanjing Univ Informat Sci & Technol, CMA Key Lab Aerosol Cloud Precipitat, Nanjing 210044, Jiangsu, Peoples R China 8.Aerodyne Res Inc, Billerica, MA 01821 USA |
| 推荐引用方式 GB/T 7714 | Sun, Yele,Du, Wei,Fu, Pingqing,et al. Primary and secondary aerosols in beijing in winter: sources, variations and processes[J]. Atmospheric chemistry and physics,2016,16(13):8309-8329. |
| APA | Sun, Yele.,Du, Wei.,Fu, Pingqing.,Wang, Qingqing.,Li, Jie.,...&Wang, Zifa.(2016).Primary and secondary aerosols in beijing in winter: sources, variations and processes.Atmospheric chemistry and physics,16(13),8309-8329. |
| MLA | Sun, Yele,et al."Primary and secondary aerosols in beijing in winter: sources, variations and processes".Atmospheric chemistry and physics 16.13(2016):8309-8329. |
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来源：中国科学院大学
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