Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/107428
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Civil and Environmental Engineering | en_US |
dc.creator | Li, H | en_US |
dc.creator | Lyu, X | en_US |
dc.creator | Xue, L | en_US |
dc.creator | Huo, Y | en_US |
dc.creator | Yao, D | en_US |
dc.creator | Lu, H | en_US |
dc.creator | Guo, H | en_US |
dc.date.accessioned | 2024-06-21T06:11:52Z | - |
dc.date.available | 2024-06-21T06:11:52Z | - |
dc.identifier.issn | 1680-7316 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/107428 | - |
dc.language.iso | en | en_US |
dc.publisher | Copernicus GmbH | en_US |
dc.rights | © Author(s) 2024. This work is distributed under the Creative Commons Attribution 4.0 License (https://creativecommons.org/licenses/by/4.0/). | en_US |
dc.rights | The following publication Li, H., Lyu, X., Xue, L., Huo, Y., Yao, D., Lu, H., and Guo, H.: In situ measurement of organic aerosol molecular markers in urban Hong Kong during a summer period: temporal variations and source apportionment, Atmos. Chem. Phys., 24, 7085–7100 is available at https://doi.org/10.5194/acp-24-7085-2024, 2024. | en_US |
dc.title | In situ measurement of organic aerosol molecular markers in urban Hong Kong during a summer period : temporal variations and source apportionment | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 7085 | en_US |
dc.identifier.epage | 7100 | en_US |
dc.identifier.volume | 24 | en_US |
dc.identifier.issue | 12 | en_US |
dc.identifier.doi | 10.5194/acp-24-7085-2024 | en_US |
dcterms.abstract | Organic aerosol (OA) is a significant constituent of urban particulate matter (PM), and molecular markers therein provide information on the sources and formation mechanisms. With the in situ measurement of over 70 OA molecular markers in a summer month at a bihourly resolution, this study focused on the temporal variations in representative markers and dynamic source contributions to OA at an urban site in Hong Kong SAR (HK). The levels of secondary OA (SOA) markers were markedly elevated (p < 0.05) in the short-duration cases with continental and coastal air relative to those in the most common marine air, and the primary markers primarily contained local characteristics. The troughs showed the enhancements of many SOA markers (p < 0.05), which appeared to be related to the high relative humidity. The diurnal patterns of 2-methyltetrols varied in differed cases, and their aqueous formation at night seemed plausible, particularly in the presence of troughs. Eight sources were identified for the organic matter in submicron PM (PM1-OM). Despite being an urban site, the mean SOA contribution (66.1 ± 10.5 %), primarily anthropogenic, was significant. Anthropogenic SOA dominated in the cases with continental and coastal air and in the early afternoon. Local cooking and vehicle emissions became predominant in the case of marine air without troughs. Even averaged over the study period in this summer month with the prevalence of marine air, primary cooking emissions contributed up to 44.2 % to PM1-OM in the early evening. The study highlighted the need to control regional anthropogenic SOA and local cooking emissions to mitigate PM pollution in HK. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Atmospheric chemistry and physics, 2024, v. 24, no. 12, p. 7085-7100 | en_US |
dcterms.isPartOf | Atmospheric chemistry and physics | en_US |
dcterms.issued | 2024 | - |
dc.identifier.eissn | 1680-7324 | en_US |
dc.description.validate | 202406 bcch | en_US |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | a2868-n01 | - |
dc.description.fundingSource | RGC | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | National Natural Science Foundation of China; Hong Kong Baptist University; Research Institute for Land and Space of the Hong Kong Polytechnic University | en_US |
dc.description.pubStatus | Published | en_US |
dc.description.oaCategory | CC | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
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acp-24-7085-2024.pdf | 5.54 MB | Adobe PDF | View/Open | |
acp-24-7085-2024-supplement.pdf | 1.68 MB | Adobe PDF | View/Open |
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