Chemical characterization of sub-micron aerosols over the East Sea (Sea of Japan)
SCIE
SCOPUS
Cited 2 time in
WEB OF SCIENCE
Cited 3 time in
Scopus
-
Title
- Chemical characterization of sub-micron aerosols over the East Sea (Sea of Japan)
-
Author(s)
- Loh, Andrew; Kim, Dong Hwi; An, Joon Geon; Choi, Na Rin; Yim, Un Hyuk
- KIOST Author(s)
- Loh, Andrew(Loh, Andrew); Kim, Dong Hwi(김동휘); An, Joon Geon(안준건); Choi, Na Rin(최나린); Yim, Un Hyuk(임운혁)
-
Alternative Author(s)
- Andrew; 김동휘; 안준건; 최나린; 임운혁
-
Publication Year
- 2023-01
-
Abstract
- Studies of the land-sea-air interactions of aerosol are scarce considering their significant role in global environmental changes. Here, we investigated potential sources of sub-micron aerosols over the East Sea (Sea of Japan), which is strongly influenced by continental and marine aerosols. A high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS) was used to measure the size-resolved chemical compositions of sub-micron aerosols during the period March 10–15, 2020. Concentrations of all AMS species, black carbon (BC), PM10 (particulate matter <10 μm) and PM2.5 (particulate matter <2.5 μm) were higher when cruising in industrialized coastal areas compared to the offshore region. A positive matrix factorization (PMF) model identified five distinct sources, i.e., hydrocarbon-like organic aerosol, semi-volatile and low-volatile oxygenated aerosols, methanesulfonic acid (MSA), and dimethyl sulfide (DMS; C2H6S) oxidation, which accounted for 5.98 %, 21.6 %, 28.3 %, 34.5 %, and 9.64 % of the total organic mass, respectively. The spatiotemporal variation of MSA, as well as the MSA to sulfate ratio (MSA:SO42−) over the East Sea, was determined for the first time. The mass concentrations of MSA displayed a similar time series distribution pattern to those of DMS. The time series distributions of the MSA:SO42− ratio displayed distinct differences, with higher ratios downwind of the ocean (0.216 ± 0.083 μg·m−3) than land (0.089 ± 0.030 μg·m−3). The growth of ultrafine particles (10–35 nm) was observed during two of the elevated MSA:SO42− ratio events, suggesting a potential role of MSA in new particle formation. © 2022 Elsevier B.V.
-
ISSN
- 0048-9697
-
URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/43263
-
DOI
- 10.1016/j.scitotenv.2022.159173
-
Bibliographic Citation
- Science of the Total Environment, v.856, 2023
-
Publisher
- Elsevier BV
-
Keywords
- Aerosol mass spectrometer; East Sea; Methanesulfonic acid; Sub-micron marine aerosol
-
Type
- Article
-
Language
- English
-
Document Type
- Article
- Files in This Item:
-
There are no files associated with this item.
Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.