Source apportionment of PM2.5 in Seoul, Korea
Open Access
- 27 July 2009
- journal article
- Published by Copernicus GmbH in Atmospheric Chemistry and Physics
- Vol. 9 (14), 4957-4971
- https://doi.org/10.5194/acp-9-4957-2009
Abstract
PM2.5 samples were collected at a centrally located urban monitoring site in Seoul, Korea, every third day from March 2003 to December 2006 and analyzed for their chemical constituents. Sources were identified using positive matrix factorization (PMF). A total of 393 samples were obtained during the sampling period, and 20 chemical species were measured. Nine PM2.5 source categories were identified providing physically realistic profiles and interesting insights into the source contributions to the ambient mass concentrations. The major contributors of PM2.5 were secondary nitrate (20.9%), secondary sulfate (20.5%), gasoline-fueled vehicles (17.2%), and biomass burning (12.1%), with lesser contributions from diesel emissions (8.1%), soil (7.4%), industry (6.7%), road salt and two-stroke vehicles (5.1%), and aged sea salt (2.2%). PM2.5 levels in Seoul were influenced by both local urban activities and regional-scale transport. Conditional probability function (CPF) results identified possible source directions of local sources such as motor vehicles (gasoline and diesel), industry, and road salt. Potential source contribution function (PSCF) results showed that possible source areas contributing to the elevated secondary particle concentrations (sulfate and nitrate) in Seoul to be the major industrial areas in China.Keywords
This publication has 53 references indexed in Scilit:
- Estimation of source locations of total gaseous mercury measured in New York State using trajectory-based modelsAtmospheric Environment, 2007
- Investigation of Sources of Atmospheric Aerosol at a Hot Spot Area in Dhaka, BangladeshJournal of the Air & Waste Management Association, 2005
- Emissions of Organic Compounds and Trace Metals in Fine Particulate Matter from Motor Vehicles: A Tunnel Study in Houston, TexasJournal of the Air & Waste Management Association, 2005
- Identification of source locations for atmospheric dry deposition of heavy metals during yellow-sand events in Seoul, Korea in 1998 using hybrid receptor modelsAtmospheric Environment, 2004
- The characteristics of PM2.5 in Beijing, ChinaAtmospheric Environment, 2001
- Elemental Carbon-Based Method for Monitoring Occupational Exposures to Particulate Diesel ExhaustAerosol Science and Technology, 1996
- Possible sources and preferred pathways for biogenic and non‐sea‐salt sulfur for the high ArcticJournal of Geophysical Research: Solid Earth, 1995
- An Association between Air Pollution and Mortality in Six U.S. CitiesNew England Journal of Medicine, 1993
- Target-Transformation Factor Analysis of Airborne Particulate Samples Selected by Wind-Trajectory AnalysisAerosol Science and Technology, 1988
- A residence time probability analysis of sulfur concentrations at grand Canyon National ParkAtmospheric Environment (1967), 1985