Photochemical aging of aerosol particles in different air masses arriving at Baengnyeong Island, Korea
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kang, Eunha | - |
dc.contributor.author | Lee, Meehye | - |
dc.contributor.author | Brune, William H. | - |
dc.contributor.author | Lee, Taehyoung | - |
dc.contributor.author | Park, Taehyun | - |
dc.contributor.author | Ahn, Joonyoung | - |
dc.contributor.author | Shang, Xiaona | - |
dc.date.accessioned | 2021-09-02T11:37:29Z | - |
dc.date.available | 2021-09-02T11:37:29Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2018-05-09 | - |
dc.identifier.issn | 1680-7316 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/75558 | - |
dc.description.abstract | Atmospheric aerosol particles are a serious health risk, especially in regions like East Asia. We investigated the photochemical aging of ambient aerosols using a potential aerosol mass (PAM) reactor at Baengnyeong Island in the Yellow Sea during 4-12 August 2011. The size distributions and chemical compositions of aerosol particles were measured alternately every 6 min from the ambient air or through the highly oxidizing environment of a potential aerosol mass (PAM) reactor. Particle size and chemical composition were measured by using the combination of a scanning mobility particle sizer (SMPS) and a high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS). Inside the PAM reactor, O-3 and OH levels were equivalent to 4.6 days of integrated OH exposure at typical atmospheric conditions. Two types of air masses were distinguished on the basis of the chemical composition and the degree of aging: air transported from China, which was more aged with a higher sulfate concentration and O : C ratio, and the air transported across the Korean Peninsula, which was less aged with more organics than sulfate and a lower O : C ratio. For both episodes, the particulate sulfate mass concentration increased in the 200-400 nm size range when sampled through the PAM reactor. A decrease in organics was responsible for the loss of mass concentration in 100-200 nm particles when sampled through the PAM reactor for the organics-dominated episode. This loss was especially evident for the m/z 43 component, which represents less oxidized organics. The m/z 44 component, which represents further oxidized organics, increased with a shift toward larger sizes for both episodes. It is not possible to quantify the maximum possible organic mass concentration for either episode because only one OH exposure of 4.6 days was used, but it is clear that SO2 was a primary precursor of secondary aerosol in northeast Asia, especially during long-range transport from China. In addition, inorganic nitrate evaporated in the PAM reactor as sulfate was added to the particles. These results suggest that the chemical composition of aerosols and their degree of photochemical aging, particularly for organics, are also crucial in determining aerosol mass concentrations. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | COPERNICUS GESELLSCHAFT MBH | - |
dc.subject | SECONDARY ORGANIC AEROSOL | - |
dc.subject | OXIDATION FLOW REACTOR | - |
dc.subject | BIOMASS-BURNING SMOKE | - |
dc.subject | HETEROGENEOUS OXIDATION | - |
dc.subject | SOA FORMATION | - |
dc.subject | LOS-ANGELES | - |
dc.subject | FOREST AIR | - |
dc.subject | INTEX-B | - |
dc.subject | OH | - |
dc.subject | SPECTROMETER | - |
dc.title | Photochemical aging of aerosol particles in different air masses arriving at Baengnyeong Island, Korea | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Meehye | - |
dc.identifier.doi | 10.5194/acp-18-6661-2018 | - |
dc.identifier.scopusid | 2-s2.0-85046746576 | - |
dc.identifier.wosid | 000431763600004 | - |
dc.identifier.bibliographicCitation | ATMOSPHERIC CHEMISTRY AND PHYSICS, v.18, no.9, pp.6661 - 6677 | - |
dc.relation.isPartOf | ATMOSPHERIC CHEMISTRY AND PHYSICS | - |
dc.citation.title | ATMOSPHERIC CHEMISTRY AND PHYSICS | - |
dc.citation.volume | 18 | - |
dc.citation.number | 9 | - |
dc.citation.startPage | 6661 | - |
dc.citation.endPage | 6677 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.relation.journalResearchArea | Meteorology & Atmospheric Sciences | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.relation.journalWebOfScienceCategory | Meteorology & Atmospheric Sciences | - |
dc.subject.keywordPlus | SECONDARY ORGANIC AEROSOL | - |
dc.subject.keywordPlus | OXIDATION FLOW REACTOR | - |
dc.subject.keywordPlus | BIOMASS-BURNING SMOKE | - |
dc.subject.keywordPlus | HETEROGENEOUS OXIDATION | - |
dc.subject.keywordPlus | SOA FORMATION | - |
dc.subject.keywordPlus | LOS-ANGELES | - |
dc.subject.keywordPlus | FOREST AIR | - |
dc.subject.keywordPlus | INTEX-B | - |
dc.subject.keywordPlus | OH | - |
dc.subject.keywordPlus | SPECTROMETER | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.