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Characteristics and source apportionment of PM1 emissions at a roadside station
Cheng,Y(Cheng,Y.)[1,2,3]; Zou,SC( Zou,S.C.)[4]; Lee,SC(Lee,S.C.)[3]; Chow,JC( Chow,J.C.)[1,2,5]; Ho,KF( Ho,K.F.)[3]; Watson,JG(Watson J.G.)[1,2,5]; Han,YM(Han Y.M.)[2]; Zhang,RJ(Zhang R.J.)[6]; Zhang,F( Zhang F.)[1]; Yau,PS( Yau P.S.)[3]; Huang,Y( Huang Y.)[3]; Bai,Y( Bai Y.)[1]; Wu,WJ( Wu,W.J.)[1]
Source PublicationJournal of Hazardous Materials

The mass concentrations of PM(1) (particles less than 1.0 μm in aerodynamic diameter), organic carbon (OC), elemental carbon (EC), water-soluble ions, and up to 25 elements were reported for 24h aerosol samples collected every sixth day at a roadside sampling station in Hong Kong from October 2004 to September 2005. Annual average PM(1) mass concentration was 44.5 ± 19.5 μg m(-3). EC, OM (organic matter, OC × 1.2), and SO(4)(=) were the dominant components, accounting for ∼ 36%, ∼ 26%, and ∼ 24% of PM(1), respectively. Other components, i.e., NO(3)(-), NH(4)(+), geological material, trace elements and unidentified material, comprised the remaining ∼ 14%. Annual average OC/EC ratio (0.6 ± 0.3) was low, indicating that primary vehicle exhaust was the major source of carbonaceous aerosols. The seasonal variations of pollutants were due to gas-particle partitioning processes or a change in air mass rather than secondary aerosol produced locally. Vehicle exhaust, secondary aerosols, and waste incinerator/biomass burning were dominant air pollution sources, accounting for ∼ 38%, ∼ 22% and ∼ 16% of PM(1), respectively. Pollution episodes during summer (May-August) which were frequently accompanied by tropical storms or typhoons were dominated by vehicle emissions. During winter (November-February) pollution episodes coincided with northeasterly monsoons were characterized by secondary aerosols and incinerator/biomass burning emissions.

KeywordPM1 Chemical composition PMF
Indexed BySCI
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Cited Times:51[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorCheng,Y(Cheng,Y.)[1,2,3]
Affiliation1.Department of Environmental Science and Technology, School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, No.28 Xianning West Road, Xi’an, Shaanxi,710049, China;
2.SKLLQG, Institute of Earth and Environment, CAS, Xi’an, Shaanxi, 710075, China;
3.Department of Civil and Structural Engineering, Research Center for Environmental Technology and Management, The Hong Kong Polytechnic University, Hung Hom, Kowloon,Hong Kong;
4.School of Marine Sciences, Sun Yat-sen University, Guangzhou 510275, China;
5.Division of Atmospheric Sciences, Desert Research Institute, Reno, NV, USA;
6.Key Laboratory of Regional Climate-Environment Research for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China
Recommended Citation
GB/T 7714
Cheng,Y,Zou,SC,Lee,SC,et al. Characteristics and source apportionment of PM1 emissions at a roadside station[J]. Journal of Hazardous Materials,2011,195:82-91.
APA Cheng,Y.,Zou,SC.,Lee,SC.,Chow,JC.,Ho,KF.,...&Wu,WJ.(2011).Characteristics and source apportionment of PM1 emissions at a roadside station.Journal of Hazardous Materials,195,82-91.
MLA Cheng,Y,et al."Characteristics and source apportionment of PM1 emissions at a roadside station".Journal of Hazardous Materials 195(2011):82-91.
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