Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/43387
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Civil and Environmental Engineering | en_US |
dc.contributor | Department of Civil and Environmental Engineering | - |
dc.contributor | Research Institute for Sustainable Urban Development | - |
dc.creator | Gao, Y | en_US |
dc.creator | Lee, SC | en_US |
dc.creator | Huang, Y | en_US |
dc.creator | Chow, JC | en_US |
dc.creator | Watson, JG | en_US |
dc.date.accessioned | 2016-06-07T06:16:07Z | - |
dc.date.available | 2016-06-07T06:16:07Z | - |
dc.identifier.issn | 0169-8095 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/43387 | - |
dc.language.iso | en | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | © 2015 Elsevier B.V. All rights reserved. | en_US |
dc.rights | © 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. | en_US |
dc.rights | The following publication Gao, Y., Lee, S. C., Huang, Y., Chow, J. C., & Watson, J. G. (2016). Chemical characterization and source apportionment of size-resolved particles in Hong Kong sub-urban area. Atmospheric Research, 170, 112-122 is available at https://doi.org/10.1016/j.atmosres.2015.11.015. | en_US |
dc.subject | Aerosol size distribution | en_US |
dc.subject | Carbonaceous aerosol | en_US |
dc.subject | Inorganic ions | en_US |
dc.subject | MOUDI | en_US |
dc.subject | PMF | en_US |
dc.title | Chemical characterization and source apportionment of size-resolved particles in Hong Kong sub-urban area | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 112 | en_US |
dc.identifier.epage | 122 | en_US |
dc.identifier.volume | 170 | en_US |
dc.identifier.doi | 10.1016/j.atmosres.2015.11.015 | en_US |
dcterms.abstract | Size-resolved particulate matter (PM) samples were collected with a 10-stage Micro-Orifice Uniform Deposit Impactor (MOUDI) at a sub-urban site (Tung Chung) in Hong Kong for four non-consecutive months representing four seasons from 2011 to 2012. Major chemical components were water-soluble anions (i.e., Cl-, NO3 -, and SO4 2-), cations (i.e., NH4 +, Na+, K+, and Ca2+), organic and elemental carbon and elements. Both chemical mass closure and positive matrix factorization (PMF) were employed to understand the chemical composition, resolve particle size modes, and evaluate the PM sources. Tri-modal size distributions were found for PM mass and major chemical components (e.g., SO4 2-, NH4 +, and OC). Mass median aerodynamic diameters (MMADs) with similar standard deviations (1.32<σ<1.42) were 0.4, 0.7 and 3.8μm, consistent with condensation, droplet and coarse modes. A bi-modal distribution peaking at condensation and droplet modes was found for EC, with a single mode peaking at 3.8μm for Cl-. Besides secondary SO4 2-, carbonaceous aerosol dominated the condensation mode with 27% by engine exhaust and 18-19% each by residual oil combustion (shipping) and coal/biomass burning. Secondary SO4 2- is also the most dominant component in the droplet mode, accounting for 23% of PM mass, followed by an industrial source (19%). Engine exhaust, secondary NO3 -, and sea salt each accounted for 13-15% of PM mass. Sea salt and soil are the dominated sources in the coarse mode, accounting for ~80% of coarse mass. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Atmospheric research, 15 Mar. 2016, v. 170, p. 112-122 | en_US |
dcterms.isPartOf | Atmospheric research | en_US |
dcterms.issued | 2016-03-15 | - |
dc.identifier.isi | WOS:000368866500011 | - |
dc.identifier.scopus | 2-s2.0-84954145741 | - |
dc.identifier.eissn | 1873-2895 | en_US |
dc.identifier.rosgroupid | 2015000371 | - |
dc.description.ros | 2015-2016 > Academic research: refereed > Publication in refereed journal | en_US |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | CEE-2534 | - |
dc.description.fundingSource | RGC | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | Environmental conservation Fund of Hong Kong | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 6606883 | - |
dc.description.oaCategory | Green (AAM) | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Lee_Chemical_Characterization_Source.pdf | Pre-Published version | 9.47 MB | Adobe PDF | View/Open |
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