Characterization and sources of water-soluble organic species in PM2.5 in a remote mountain environment in Southeastern China

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dc.contributor.author
Tao, Jun
Zhang, Zhisheng
Zhang, Leiming
Wu, Yunfei
Ren, Yanqin
Li, Jiawei
Huang, Junjun
Wang, Gehui
Shen, Zhenxin
Zhang, Renjian
Wang, Boguang
dc.date.accepted
2023-08-29
dc.date.accessioned
2024-04-17T13:42:30Z
dc.date.available
2024-04-17T13:42:30Z
dc.date.issued
2023-11-15
dc.date.submitted
2023-05-04
dc.description.abstract - en
A comprehensive campaign was conducted in 2014-2015 to characterize and identify potential sources of water-soluble organic matter (WSOM) in a remote mountain area in Southeastern China. Weekly measurements of PM<sub>2.5</sub> and its dominant chemical components, including organic carbon (OC), elemental carbon (EC), water-soluble inorganic ions (WSIIs), water-soluble organic carbon (WSOC), Humic-like Substances (HULIS), water-soluble organic species (sugar alcohols, anhydrosugars, primary sugars, and carboxylic acids), and trace elements were conducted. PM<sub>10</sub>, PM<sub>2.5</sub>, NO<sub>2</sub>, O<sub>3</sub>, and meteorological parameters were also routinely measured at the same site. WSOM was dominated by HULIS (49%), carboxylic acids (12%), and saccharides (3%, a sum of sugar alcohols, anhydrosugars, and primary sugars). Carboxylic acids exhibited a flat seasonal variation, while high mass concentrations of sugar alcohols and anhydrosugars were observed in summer and winter, respectively. The converting factor from WSOC to WSOM was estimated to be 2.1 for this mountain site. Six major source factors were identified for WSOM using positive matrix factorization (PMF) analysis, which include aqueous processes, biogenic secondary organic aerosols (SOAs), biomass burning, mixed urban aerosols, soil dust, and secondary nitrate. These factors contributed 34±22%, 20±24%, 18±18%, 14±8%, 10±13%, and 5±10%, respectively, to annual WSOM mass concentration. Results of this study suggest that aqueous chemical reactions of gaseous pollutants during the transport process, the transport of biomass burning, urban aerosols and dust storm, and local formation of biogenic SOAs contributed to WSOM in the remote area of Southeastern China.
dc.identifier.issn
1352-2310
1878-2442
dc.identifier.uri
https://open-science.canada.ca/handle/123456789/2335
dc.language.iso
en
dc.publisher
Elsevier
dc.relation.isreplacedby
https://doi.org/10.1016/j.atmosenv.2023.120057
dc.rights - en
Open Government Licence - Canada
dc.rights - fr
Licence du gouvernement ouvert - Canada
dc.rights.openaccesslevel - en
Green
dc.rights.openaccesslevel - fr
Vert
dc.rights.uri - en
https://open.canada.ca/en/open-government-licence-canada
dc.rights.uri - fr
https://ouvert.canada.ca/fr/licence-du-gouvernement-ouvert-canada
dc.subject - en
Nature and environment
Science and technology
dc.subject - fr
Nature et environnement
Sciences et technologie
dc.subject.en - en
Nature and environment
Science and technology
dc.subject.fr - fr
Nature et environnement
Sciences et technologie
dc.title - en
Characterization and sources of water-soluble organic species in PM2.5 in a remote mountain environment in Southeastern China
dc.type - en
Submitted manuscript
dc.type - fr
Manuscrit soumis
local.article.journaltitle
Atmospheric Environment
local.article.journalvolume
313
local.pagination
23 pages, annexes
local.peerreview - en
No
local.peerreview - fr
Non
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