View : 225 Download: 0

Temporal variations and characteristics of the carbonaceous species in PM2.5 measured at anmyeon island, a background site in Korea

Title
Temporal variations and characteristics of the carbonaceous species in PM2.5 measured at anmyeon island, a background site in Korea
Authors
Lee J.S.Kim E.S.Kim K.-A.Yu J.Z.Kim Y.P.Jung C.H.Lee J.Y.
Ewha Authors
김용표이지이
SCOPUS Author ID
김용표scopus; 이지이scopus
Issue Date
2020
Journal Title
Asian Journal of Atmospheric Environment
ISSN
1976-6912JCR Link
Citation
Asian Journal of Atmospheric Environment vol. 14, no. 1, pp. 35 - 46
Keywords
Biomass burningCarbonaceous speciesGAW satationHULISPM2.5
Publisher
Korean Society for Atmospheric Environment
Indexed
SCOPUS; KCI scopus
Document Type
Article
Abstract
Routine measurements of carbonaceous species in PM2.5 inculidng organic carbon (OC), elemental carbon (EC), water-soluble organic carbon (WSOC), and humiclike-substance carbon (HULIS-C) in PM2.5 were performed at Anmyeon Island (AI) to clarify the seasonal variation and carbonaceous aerosol concentrations at a background site in Korea between 2015 and 2016. The annual average OC and EC concentrations were 4.52±3.25 μg/m3 and 0.46±0.28 μg/m3, respectively, and there were no clear seasonal variations in OC and EC concentrations. The average concentrations of WSOC and waterinsoluble organic carbon (WISOC) were 2.56±1.95 μg/m3 and 1.96±1.45 μg/m3, respectively, and their composition in OC showed high temporal variations. A low correlation between WISOC and EC was observed, while WSOC concentrations were highly correlated with secondary organic carbon concentrations, which were estimated using the EC tracer method. The results indicate that the formation of secondary organic aerosols is a major factor for the determination of WSOC concentrations in this region. HULIS-C was the major component of WSOC, accounting for 39-99% of WSOC and the average concentration was 1.88±1.52 μg/m3. Two distinct periods with high carbonaceous speciess in PM2.5 were observed and characterized by their OC/EC ratios. The high concentration of OC with high ratio of OC/EC was due to the influence of a mixture of emissions from biomass burning and secondary formation transported from outside AI. While, the high concentrations of OC and EC with low OC/EC ratio were related to local vehicular emissions. © 2020 by Asian Journal of Atmospheric Environment.
Show the fulltext
DOI
10.5572/AJAE.2020.14.1.035
Appears in Collections:
엘텍공과대학 > 화학신소재공학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE