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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

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dc.contributor.authorPark, Yoojin-
dc.contributor.authorKim, Hwajin-
dc.date.accessioned2024-05-16T01:29:51Z-
dc.date.available2024-05-16T01:29:51Z-
dc.date.created2023-04-19-
dc.date.created2023-04-19-
dc.date.issued2023-06-
dc.identifier.citationEnvironmental Pollution, Vol.327, p. 121464-
dc.identifier.issn0269-7491-
dc.identifier.urihttps://hdl.handle.net/10371/202587-
dc.description.abstractHerein, 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.language영어-
dc.publisherPergamon Press Ltd.-
dc.titleReal time measurements of the secondary organic aerosol formation and aging from ambient air using an oxidation flow reactor in seoul during winter-
dc.typeArticle-
dc.identifier.doi10.1016/j.envpol.2023.121464-
dc.citation.journaltitleEnvironmental Pollution-
dc.identifier.wosid000967589000001-
dc.identifier.scopusid2-s2.0-85151264557-
dc.citation.startpage121464-
dc.citation.volume327-
dc.description.isOpenAccessN-
dc.contributor.affiliatedAuthorKim, Hwajin-
dc.type.docTypeArticle-
dc.description.journalClass1-
dc.subject.keywordPlusHETEROGENEOUS OXIDATION-
dc.subject.keywordPlusLOS-ANGELES-
dc.subject.keywordPlusOH-
dc.subject.keywordPlusCHEMISTRY-
dc.subject.keywordPlusPHOTOOXIDATION-
dc.subject.keywordPlusRADICALS-
dc.subject.keywordAuthorHR-ToF-AMS-
dc.subject.keywordAuthorOrganic elemental ratio analysis-
dc.subject.keywordAuthorOxidation flow reactor-
dc.subject.keywordAuthorPositive matrix factorization (PMF)-
dc.subject.keywordAuthorSOA formation Potential-
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  • Graduate School of Public Health
  • Department of Environmental Health Sciences
Research Area Aerosol Health Effect, Atmospheric chemistry monitoring and modeling, Chemistry and life cycles of aerosol, 대기화학 모니터링 및 모델링, 대기환경 오염원 및 특성 규명

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