PM2.5 and PM10-2.5 chemical composition and source apportionmentnear a Hong Kong roadway
文献类型：期刊论文
| 作者 | Watson,JG(Watson,John G.)[1,2,5]; Zhang,RJ(Zhang,Renjian)[6]; Ho,KF(Ho,Kinfai)[4]; Zhang,YW(Zhang,Yunwei)[1]; Huang,Y(Huang,Yu)[3]; Chow,JC(Chow,Judith C.)[1,2,5]; Cao,JJ(Cao,Junji)[2]; Cheng,Y(Cheng,Yan)[1,2,3]; Lee,SC(Lee,Shuncheng)[3]; Gu,ZL(Gu,Zhaolin)[1] |
| 刊名 | Particuology
 |
| 出版日期 | 2015-02 |
| 卷号 | 18期号:2015页码:96-104 |
| 关键词 | PM2.5 PM10-2.5 Roadside Chemical composition Source apportionment Hong Kong |
| DOI | 10.1016/j.partic.2013.10.003 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Twenty-four-hour PM2.5 and PM10 samples were collected simultaneously at a highly trafficked roadside site in Hong Kong every sixth day from October 2004 to September 2005. The mass concentrations of PM2.5, PM10-2.5 (defined as PM10 − PM2.5), organic carbon (OC), elemental carbon (EC), water-soluble ions, and up to 25 elements were determined. Investigation of the chemical compositions and potential sources revealed distinct differences between PM2.5 and PM10-2.5. The annual average mass concentrations were 55.5 ± 25.5 and 25.9 ± 15.7 g/m3 for PM2.5 and PM10-2.5, respectively. EC, OM (OM = OC × 1.4), and ammonium sulfate comprised over ∼82% of PM2.5, accounting for ∼29%, ∼27%, and ∼25%, respectively, of the PM2.5 mass. Low OC/EC ratios (less than 1) for PM2.5 suggested that fresh diesel-engine exhaust was a major contributor. Seven sources were resolved for PM2.5 by positive matrix factorization (PMF) model, including vehicle emissions (∼29%), secondary inorganic aerosols (∼27%), waste incinerator/biomass burning (∼23%), residual oil combustion (∼10%), marine aerosols (∼6%), industrial exhaust (∼4%), and resuspended road dust (∼1%). EC and OM comprised only ∼19% of PM10-2.5. The average OC/EC ratio of PM10-2.5 was 7.8 ± 14.2, suggesting that sources other than vehicular exhaust were important contributors. The sources for PM10-2.5 determined by the PMF model included ∼20% traffic-generated resuspension (e.g., tire dust/brake linear/petrol evaporation), ∼17% locally resuspended road dust, ∼17% marine aerosols, ∼12% secondary aerosols/field burning, and ∼11% vehicle emissions. |
| 语种 | 英语 |
| 源URL | [http://ir.ieecas.cn/handle/361006/9611]  |
| 专题 | 地球环境研究所_黄土与第四纪地质国家重点实验室（2010~） |
| 作者单位 | 1.Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences,
Beijing 100029, China 2.Department of Environmental Science and Technology, School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China; 3.State Key Laboratory of Loess Quaternary Geology, Institute of Earth and Environment, Chinese Academy of Sciences, Xi’an 710075, China; 4.Department of Civil and Structural Engineering, Research Center for Environmental Technology and Management, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China; 5.School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, China; 6.Division of Atmospheric Sciences, Desert Research Institute, NV 89512-1095, USA; |
| 推荐引用方式 GB/T 7714 | Watson,JG,Zhang,RJ,Ho,KF,et al. PM2.5 and PM10-2.5 chemical composition and source apportionmentnear a Hong Kong roadway[J]. Particuology,2015,18(2015):96-104. |
| APA | Watson,JG.,Zhang,RJ.,Ho,KF.,Zhang,YW.,Huang,Y.,...&Gu,ZL.(2015).PM2.5 and PM10-2.5 chemical composition and source apportionmentnear a Hong Kong roadway.Particuology,18(2015),96-104. |
| MLA | Watson,JG,et al."PM2.5 and PM10-2.5 chemical composition and source apportionmentnear a Hong Kong roadway".Particuology 18.2015(2015):96-104. |
入库方式： OAI收割
来源：地球环境研究所
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