Dicarboxylic acids, ketocarboxylic acids, alpha-dicarbonyls, fatty acids and benzoic acid in PM2.5 aerosol collected during CAREBeijing-2007: an effect of traffic restriction on air quality | |
Huang, R. -J.6,7; Ho, K. F.3; Tian, L.4; Zhu, T.5; Ho, S. S. H.2,3; Lee, S. C.1; Tachibana, E.8; Kawamura, K.8 | |
刊名 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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2015 | |
卷号 | 15期号:6页码:3111-3123 |
ISSN号 | 1680-7316 |
DOI | 10.5194/acp-15-3111-2015 |
文献子类 | Article |
英文摘要 | Thirty water-soluble organic species, including dicarboxylic acids, ketocarboxylic acids, alpha-dicarbonyls, fatty acids and benzoic acid were determined as well as organic carbon (OC), elemental carbon (EC) and water-soluble organic carbon (WSOC) in PM2.5 samples collected during the Campaign of Air Quality Research in Beijing 2007 (CAREBeijing-2007) in the urban and suburban areas of Beijing. The objective of this study is to identify the influence of traffic emissions and regional transport to the atmosphere in Beijing during summer. PM2.5 samples collected with or without traffic restriction in Beijing are selected to evaluate the effectiveness of local traffic restriction measures on air pollution reduction. The average concentrations of the total quantified bifunctional organic compounds (TQBOCs), total fatty acids and benzoic acid during the entire sampling period were 1184 +/- 241, 597 +/- 159 and 1496 +/- 511 ng m(-3) in Peking University (PKU), and 1050 +/- 303, 475 +/- 114 and 1278 +/- 372 ng m(-3) in Yufa, Beijing. Oxalic acid (C-2) was found as the most abundant dicarboxylic acid at PKU and Yufa followed by phthalic acid (Ph). A strong even carbon number predominance with the highest level at stearic acid (C-18:0), followed by palmitic acid (C-16:0) was found for fatty acids. According to the back trajectories modeling results, the air masses were found to originate mainly from the northeast, passing over the southeast or south of Beijing (heavily populated, urbanized and industrialized areas), during heavier pollution events, whereas they are mainly from the north or northwest sector (mountain areas without serious anthropogenic pollution sources) during less pollution events. The data with wind only from the same sector (minimizing the difference from regional contribution) but with and without traffic restriction in Beijing were analyzed to evaluate the effectiveness of local traffic restriction measures on the reduction of local air pollution in Beijing. The results suggested that the traffic restriction measures can reduce the air pollutants, but the decrease of pollutants is generally smaller in Yufa compared to that in PKU. Moreover, an enhancement of EC value indicates more elevated primary emissions in Yufa during restriction periods than in non-restriction periods. This study demonstrates that even when primary exhaust was controlled by traffic restriction, the contribution of secondary organic species formed from photochemical processes was critical with long-range atmospheric transport of pollutants. |
WOS关键词 | Polycyclic Aromatic-hydrocarbons ; Western United-states ; Fine Organic Aerosol ; Molecular-distributions ; Atmospheric Particles ; Seasonal-variations ; Pollution Episode ; Marine Atmosphere ; Urban Atmosphere ; East-asia |
WOS研究方向 | Meteorology & Atmospheric Sciences |
语种 | 英语 |
出版者 | COPERNICUS GESELLSCHAFT MBH |
WOS记录号 | WOS:000352157600009 |
内容类型 | 期刊论文 |
源URL | [http://ir.ieecas.cn/handle/361006/9349] ![]() |
专题 | 地球环境研究所_粉尘与环境研究室 |
通讯作者 | Ho, K. F. |
作者单位 | 1.Hong Kong Polytech Univ, Dept Civil & Struct Engn, Res Ctr Urban Environm Technol & Management, Kowloon, Hong Kong, Peoples R China 2.Desert Res Inst, Div Atmospher Sci, Reno, NV 89512 USA 3.Chinese Univ Hong Kong, Jockey Club Sch Publ Hlth & Primary Care, Shatin, Hong Kong, Peoples R China 4.Univ Hong Kong, Sch Publ Hlth, Hong Kong, Hong Kong, Peoples R China 5.Peking Univ, Ctr Environm & Hlth, Coll Environm Sci & Engn, State Key Lab Environm Simulat & Pollut Control, Beijing 100871, Peoples R China 6.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian, Peoples R China 7.Paul Scherrer Inst, Lab Atmospher Chem, CH-5232 Villigen, Switzerland 8.Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido 060, Japan |
推荐引用方式 GB/T 7714 | Huang, R. -J.,Ho, K. F.,Tian, L.,et al. Dicarboxylic acids, ketocarboxylic acids, alpha-dicarbonyls, fatty acids and benzoic acid in PM2.5 aerosol collected during CAREBeijing-2007: an effect of traffic restriction on air quality[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2015,15(6):3111-3123. |
APA | Huang, R. -J..,Ho, K. F..,Tian, L..,Zhu, T..,Ho, S. S. H..,...&Kawamura, K..(2015).Dicarboxylic acids, ketocarboxylic acids, alpha-dicarbonyls, fatty acids and benzoic acid in PM2.5 aerosol collected during CAREBeijing-2007: an effect of traffic restriction on air quality.ATMOSPHERIC CHEMISTRY AND PHYSICS,15(6),3111-3123. |
MLA | Huang, R. -J.,et al."Dicarboxylic acids, ketocarboxylic acids, alpha-dicarbonyls, fatty acids and benzoic acid in PM2.5 aerosol collected during CAREBeijing-2007: an effect of traffic restriction on air quality".ATMOSPHERIC CHEMISTRY AND PHYSICS 15.6(2015):3111-3123. |
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