Academic Journal
Highly time-resolved chemical characterization of atmospheric submicron particles during 2008 Beijing Olympic Games using an Aerodyne High-Resolution Aerosol Mass Spectrometer
| العنوان: | Highly time-resolved chemical characterization of atmospheric submicron particles during 2008 Beijing Olympic Games using an Aerodyne High-Resolution Aerosol Mass Spectrometer |
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| المؤلفون: | Huang, X.F., He, L.Y., Hu, M., Canagaratna, M. R., Sun, Y., Zhang, Q., Zhu, T., Xue, L., Zeng, L.W., Liu, X.G., Zhang, Y.H., Jayne, J. T., Ng, N. L., Worsnop, D. R. |
| المساهمون: | He, LY (reprint author), Peking Univ, Shenzhen Grad Sch, Sch Environm & Energy, Key Lab Urban Habitat Environm Sci & Technol, Shenzhen, Peoples R China., Peking Univ, Shenzhen Grad Sch, Sch Environm & Energy, Key Lab Urban Habitat Environm Sci & Technol, Shenzhen, Peoples R China., Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China., Aerodyne Res Inc, Billerica, MA 01821 USA., Univ Calif Davis, Dept Environm Toxicol, Davis, CA 95616 USA. |
| المصدر: | SCI |
| بيانات النشر: | atmospheric chemistry and physics |
| سنة النشر: | 2010 |
| المجموعة: | Peking University Institutional Repository (PKU IR) / 北京大学机构知识库 |
| مصطلحات موضوعية: | POSITIVE MATRIX FACTORIZATION, PARTICULATE ORGANIC-MATTER, SOURCE APPORTIONMENT, MEXICO-CITY, CHINESE COOKING, INTEX-B, EMISSIONS, AMBIENT, URBAN, PM2.5 |
| الوصف: | As part of Campaigns of Air Quality Research in Beijing and Surrounding Region-2008 (CAREBeijing-2008), an Aerodyne High-Resolution Time-of-Flight Aerosol Mass Spectrometer (HR-ToF-AMS) was deployed in urban Beijing to characterize submicron aerosol particles during the time of 2008 Beijing Olympic Games and Paralympic Games (24 July to 20 September 2008). The campaign mean PM(1) mass concentration was 63.1 +/- 39.8 mu g m(-3); the mean composition consisted of organics (37.9%), sulfate (26.7%), ammonium (15.9%), nitrate (15.8%), black carbon (3.1%), and chloride (0.87%). The average size distributions of the species (except BC) were all dominated by an accumulation mode peaking at about 600 nm in vacuum aerodynamic diameter, and organics was characterized by an additional smaller mode extending below 100 nm. Positive Matrix Factorization (PMF) analysis of the high resolution organic mass spectral dataset differentiated the organic aerosol into four components, i.e., hydrocarbon-like (HOA), cooking-related (COA), and two oxygenated organic aerosols (OOA-1 and OOA-2), which on average accounted for 18.1, 24.4, 33.7 and 23.7% of the total organic mass, respectively. The HOA was identified to be closely associated with primary combustion sources, while the COA mass spectrum and diurnal pattern showed similar characteristics to that measured for cooking emissions. The OOA components correspond to aged secondary organic aerosol. Although the two OOA components have similar elemental (O/C, H/C) compositions, they display differences in mass spectra and time series which appear to correlate with the different source regions sampled during the campaign. Back trajectory clustering analysis indicated that the southerly air flows were associated with the highest PM(1) pollution during the campaign. Aerosol particles in southern airmasses were especially rich in inorganic and oxidized organic species. Aerosol particles in northern airmasses contained a large fraction of primary HOA and COA species, probably due to stronger ... |
| نوع الوثيقة: | journal/newspaper |
| اللغة: | English |
| تدمد: | 1680-7316 |
| Relation: | ATMOSPHERIC CHEMISTRY AND PHYSICS.2010,10,(18),8933-8945.; 936755; http://hdl.handle.net/20.500.11897/396350; WOS:000282429000016 |
| DOI: | 10.5194/acp-10-8933-2010 |
| الاتاحة: | https://hdl.handle.net/20.500.11897/396350 https://doi.org/10.5194/acp-10-8933-2010 |
| رقم الانضمام: | edsbas.A63E07E2 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 16807316 |
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| DOI: | 10.5194/acp-10-8933-2010 |