Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/6995
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Civil and Environmental Engineering | - |
dc.creator | Cao, JJ | - |
dc.creator | Wu, F | - |
dc.creator | Chow, JC | - |
dc.creator | Lee, SC | - |
dc.creator | Li, Y | - |
dc.creator | Chen, SW | - |
dc.creator | An, ZS | - |
dc.creator | Fung, KK | - |
dc.creator | Watson, JG | - |
dc.creator | Zhu, CS | - |
dc.creator | Liu, SX | - |
dc.date.accessioned | 2014-12-11T08:24:13Z | - |
dc.date.available | 2014-12-11T08:24:13Z | - |
dc.identifier.issn | 1680-7316 | - |
dc.identifier.uri | http://hdl.handle.net/10397/6995 | - |
dc.language.iso | en | en_US |
dc.publisher | Copernicus GmbH | en_US |
dc.rights | © 2005 Author(s). This work is licensed under a Creative Commons License. | en_US |
dc.subject | Air sampling | en_US |
dc.subject | Atmospheric pollution | en_US |
dc.subject | Organic carbon | en_US |
dc.subject | Particulate matter | en_US |
dc.subject | Pollutant source | en_US |
dc.title | Characterization and source apportionment of atmospheric organic and elemental carbon during fall and winter of 2003 in Xi'an, China | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.description.otherinformation | Author name used in this publication: Lee, S. C. | en_US |
dc.identifier.spage | 3127 | - |
dc.identifier.epage | 3137 | - |
dc.identifier.volume | 5 | - |
dc.identifier.issue | 11 | - |
dc.identifier.doi | 10.5194/acp-5-3127-2005 | - |
dcterms.abstract | Continuous measurements of atmospheric organic and elemental carbon (OC and EC) were taken during the high-pollution fall and winter seasons at Xi'an, Shaanxi Province, China from September 2003 through February 2004. Battery-powered mini-volume samplers collected PM ₂̦₅ samples daily and PM ₁₀ samples every third day. Samples were also obtained from the plumes of residential coal combustion, motor-vehicle exhaust, and biomass burning sources. These samples were analyzed for OC/EC by thermal/optical reflectance (TOR) following the Interagency Monitoring of Protected Visual Environments (IMPROVE) protocol. OC and EC levels at Xi'an are higher than most urban cities in Asia. Average PM ₂̦₅ OC concentrations in fall and winter were 34.1±18.0 μg m ⁻³ and 61.9±;33.2 μg m ⁻³, respectively; while EC concentrations were 11.3±6.9 μg m ⁻³ and 12.3±5.3 μg m ⁻³, respectively. Most of the OC and EC were in the PM₂̦₅ fraction. OC was strongly correlated (R>0.95) with EC in the autumn and moderately correlated (R=0.81) with EC during winter. Carbonaceous aerosol (OC×1.6+EC) accounted for 48.8%±10.1% of the PM₂̦₅ mass during fall and 45.9±7.5% during winter. The average OC/EC ratio was 3.3 in fall and 5.1 in winter, with individual OC/EC ratios nearly always exceeding 2.0. The higher wintertime OC/EC corresponded to increased residential coal combustion for heating. Total carbon (TC) was associated with source contributions using absolute principal component analysis (APCA) with eight thermally-derived carbon fractions. During fall, 73% of TC was attributed to gasoline engine exhaust, 23% to diesel exhaust, and 4% to biomass burning. During winter, 44% of TC was attributed to gasoline engine exhaust, 44% to coal burning, 9% to biomass burning, and 3% to diesel engine exhaust. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Atmospheric chemistry and physics, 22 Nov. 2005, v. 5, no. 11, p. 3127-3137 | - |
dcterms.isPartOf | Atmospheric chemistry and physics | - |
dcterms.issued | 2005-11-22 | - |
dc.identifier.isi | WOS:000233609800001 | - |
dc.identifier.scopus | 2-s2.0-30344458498 | - |
dc.identifier.eissn | 1680-7324 | - |
dc.identifier.rosgroupid | r26188 | - |
dc.description.ros | 2005-2006 > Academic research: refereed > Publication in refereed journal | - |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | OA_IR/PIRA | en_US |
dc.description.pubStatus | Published | en_US |
Appears in Collections: | Journal/Magazine Article |
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File | Description | Size | Format | |
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Cao_characterization_source_apportionment.pdf | 611.46 kB | Adobe PDF | View/Open |
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