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Real time measurements of the secondary organic aerosol formation and aging from ambient air using an oxidation flow reactor in seoul during winter
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Yoojin | - |
dc.contributor.author | Kim, Hwajin | - |
dc.date.accessioned | 2024-05-16T01:29:51Z | - |
dc.date.available | 2024-05-16T01:29:51Z | - |
dc.date.created | 2023-04-19 | - |
dc.date.created | 2023-04-19 | - |
dc.date.issued | 2023-06 | - |
dc.identifier.citation | Environmental Pollution, Vol.327, p. 121464 | - |
dc.identifier.issn | 0269-7491 | - |
dc.identifier.uri | https://hdl.handle.net/10371/202587 | - |
dc.description.abstract | Herein, the formation and aging processes of organic aerosol (OA) in urban Seoul, Korea, during winter were investigated using a high-resolution aerosol mass spectrometer (HR-ToF-AMS) and an oxidation flow reactor (OFR). The results demonstrated that the highest secondary OA (SOA) production (ΔOA = 3.44 μg m−3 with a relative OA enhancement ratio (EROA) = 1.40) occurred at ∼2 eq. days of OH exposure. Particularly, higher SOA production was observed under the following atmospheric conditions: high relative humidity (RH) (>70%) and high PM1 mass concentration (>50 μg m−3), demonstrating that oxidation capacity, heterogeneous and aqueous phase reactions are important for further oxidation. Additionally, increased SOA formation occurs under both higher hydrocarbon-like OA and more oxidized OOA conditions. Further oxidation of both freshly emitted and aged and/or transported OA can be a remarkable further source of SOA in winter in Seoul and further downwind areas. In particular, the high mass concentration of MO-OOA in high total PM1 would be an important indication that SOA formation could be accelerated by a heterogeneous reaction, necessitating additional investigations on the haze formation process. | - |
dc.language | 영어 | - |
dc.publisher | Pergamon Press Ltd. | - |
dc.title | Real time measurements of the secondary organic aerosol formation and aging from ambient air using an oxidation flow reactor in seoul during winter | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.envpol.2023.121464 | - |
dc.citation.journaltitle | Environmental Pollution | - |
dc.identifier.wosid | 000967589000001 | - |
dc.identifier.scopusid | 2-s2.0-85151264557 | - |
dc.citation.startpage | 121464 | - |
dc.citation.volume | 327 | - |
dc.description.isOpenAccess | N | - |
dc.contributor.affiliatedAuthor | Kim, Hwajin | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.subject.keywordPlus | HETEROGENEOUS OXIDATION | - |
dc.subject.keywordPlus | LOS-ANGELES | - |
dc.subject.keywordPlus | OH | - |
dc.subject.keywordPlus | CHEMISTRY | - |
dc.subject.keywordPlus | PHOTOOXIDATION | - |
dc.subject.keywordPlus | RADICALS | - |
dc.subject.keywordAuthor | HR-ToF-AMS | - |
dc.subject.keywordAuthor | Organic elemental ratio analysis | - |
dc.subject.keywordAuthor | Oxidation flow reactor | - |
dc.subject.keywordAuthor | Positive matrix factorization (PMF) | - |
dc.subject.keywordAuthor | SOA formation Potential | - |
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- Graduate School of Public Health
- Department of Environmental Health Sciences
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