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Molecular marker characterization and source appointment of particulate matter and its organic aerosols

Title
Molecular marker characterization and source appointment of particulate matter and its organic aerosols
Authors
Choi, Jong-KyuBan, Soo-JinKim, Yong-PyoKim, Yong-HeeYi, Seung-MukZoh, Kyung-Duk
Ewha Authors
김용표
SCOPUS Author ID
김용표scopus
Issue Date
2015
Journal Title
CHEMOSPHERE
ISSN
0045-6535JCR Link1879-1298JCR Link
Citation
vol. 134, pp. 482 - 491
Keywords
TSPPM2.5Molecular marker (MM)Positive matrix factorization (PMF)Secondary organic aerosol (SOA)
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
This study was carried out to identify possible sources and to estimate their contribution to total suspended particle (TSP) organic aerosol (OA) contents. A total of 120 TSP and PM2.5 samples were collected simultaneously every third day over a one-year period in urban area of Incheon, Korea. High concentration in particulate matters (PM) and its components (NO3-, water soluble organic compounds (WSOCs), and n-alkanoic acids) were observed during the winter season. Among the organics, n-alkanes, n-alkanoic acids, levoglucosan, and phthalates were major components. Positive matrix factorization (PMF) analysis identified seven sources of organic aerosols including combustion 1 (low molecular weight (LMW)-polycyclic aromatic hydrocarbons (PAHs)), combustion 2 (high molecular weight (HMW)-PAHs), biomass burning, vegetative detritus (n-alkane), secondary organic aerosol 1 (SOA1), secondary organic aerosol 2 (SOA2), and motor vehicles. Vegetative detritus increased during the summer season through an increase in biogenic/photochemical activity, while most of the organic sources were prominent in the winter season due to the increases in air pollutant emissions and atmospheric stability. The correlation factors were high among the main components of the organic carbon (OC) in the TSP and PM2.5. The results showed that TSP OAs had very similar characteristics to the PM2.5 OAs. SOA, combustion (PAHs), and motor vehicle were found to be important sources of carbonaceous PM in this region. Our results imply that molecular markers (MMs)-PMF model can provide useful information on the source and characteristics of PM. (C) 2015 Elsevier Ltd. All rights reserved.
DOI
10.1016/j.chemosphere.2015.04.093
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엘텍공과대학 > 화학신소재공학전공 > Journal papers
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