Robust Evidence of C-14, C-13, and N-15 Analyses Indicating Fossil Fuel Sources for Total Carbon and Ammonium in Fine Aerosols in Seoul Megacity
DC Field | Value | Language |
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dc.contributor.author | Lim, Saehee | - |
dc.contributor.author | Hwang, Joori | - |
dc.contributor.author | Lee, Meehye | - |
dc.contributor.author | Czimczik, Claudia, I | - |
dc.contributor.author | Xu, Xiaomei | - |
dc.contributor.author | Savarino, Joel | - |
dc.date.accessioned | 2022-08-13T01:40:50Z | - |
dc.date.available | 2022-08-13T01:40:50Z | - |
dc.date.created | 2022-08-12 | - |
dc.date.issued | 2022-06-07 | - |
dc.identifier.issn | 0013-936X | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/142972 | - |
dc.description.abstract | Carbon- and nitrogen-containing aerosols are ubiquitous in urban atmospheres and play important roles in air quality and climate change. We determined the C-14 fraction modern (f(M)) and delta C-13 of total carbon (TC) and delta N-15 of NH4+ in the PM2.5 collected in Seoul megacity during April 2018 to December 2019. The seasonal mean delta C-13 values were similar to -25.1% +/- 2.0% in warm and -24.2%+/- 0.82% in cold seasons. Mean delta N-15 values were higher in warm (16.4%+/- 2.8%) than in cold seasons (4.0%+/- 6.1%), highlighting the temperature effects on atmospheric NH3 levels and phase- equilibrium isotopic exchange during the conversion of NH3 to NH4+. While 37% +/- 10% of TC was apportioned to fossilfuel sources on the basis of f(M) values, delta N-15 indicated a higher contribution of emissions from vehicle exhausts and electricity generating units (power-plant NH3 slip) to NH3: 60% +/- 26% in warm season and 66% +/- 22% in cold season, based on a Bayesian isotope-mixing model. The collective evidence of multiple isotope analysis reasonably supports the major contribution of fossil-fuel-combustion sources to NH4+, in conjunction with TC, and an increased contribution from vehicle emissions during the severe PM2.5 pollution episodes. These findings demonstrate the efficacy of a multiple-isotope approach in providing better insight into the major sources of PM2.5 in the urban atmosphere. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | SOLUBLE ORGANIC-CARBON | - |
dc.subject | ISOTOPIC COMPOSITION | - |
dc.subject | SOURCE APPORTIONMENT | - |
dc.subject | ATMOSPHERIC AMMONIA | - |
dc.subject | STABLE CARBON | - |
dc.subject | NATURAL-ABUNDANCE | - |
dc.subject | VEHICLE EMISSIONS | - |
dc.subject | ELEMENTAL CARBON | - |
dc.subject | BACKGROUND SITE | - |
dc.subject | NITROGEN | - |
dc.title | Robust Evidence of C-14, C-13, and N-15 Analyses Indicating Fossil Fuel Sources for Total Carbon and Ammonium in Fine Aerosols in Seoul Megacity | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Meehye | - |
dc.identifier.doi | 10.1021/acs.est.1c03903 | - |
dc.identifier.scopusid | 2-s2.0-85128474980 | - |
dc.identifier.wosid | 000810684000009 | - |
dc.identifier.bibliographicCitation | ENVIRONMENTAL SCIENCE & TECHNOLOGY, v.56, no.11, pp.6894 - 6904 | - |
dc.relation.isPartOf | ENVIRONMENTAL SCIENCE & TECHNOLOGY | - |
dc.citation.title | ENVIRONMENTAL SCIENCE & TECHNOLOGY | - |
dc.citation.volume | 56 | - |
dc.citation.number | 11 | - |
dc.citation.startPage | 6894 | - |
dc.citation.endPage | 6904 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.subject.keywordPlus | SOLUBLE ORGANIC-CARBON | - |
dc.subject.keywordPlus | ISOTOPIC COMPOSITION | - |
dc.subject.keywordPlus | SOURCE APPORTIONMENT | - |
dc.subject.keywordPlus | ATMOSPHERIC AMMONIA | - |
dc.subject.keywordPlus | STABLE CARBON | - |
dc.subject.keywordPlus | NATURAL-ABUNDANCE | - |
dc.subject.keywordPlus | VEHICLE EMISSIONS | - |
dc.subject.keywordPlus | ELEMENTAL CARBON | - |
dc.subject.keywordPlus | BACKGROUND SITE | - |
dc.subject.keywordPlus | NITROGEN | - |
dc.subject.keywordAuthor | PM2.5 | - |
dc.subject.keywordAuthor | ammonium | - |
dc.subject.keywordAuthor | total carbon | - |
dc.subject.keywordAuthor | stable isotopes | - |
dc.subject.keywordAuthor | radiocarbon isotope | - |
dc.subject.keywordAuthor | isotopic exchange equilibrium | - |
dc.subject.keywordAuthor | source apportionment | - |
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