AAAR 35th Annual Conference October 17 - October 21, 2016 Oregon Convention Center Portland, Oregon, USA
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Source Apportionment of PM2.5 Using the Receptor Models in Island Area and Metropolitan Area, Korea
INJO HWANG, Seung-Muk Yi, Daegu University
Abstract Number: 164 Working Group: Source Apportionment
Abstract In order to estimate the mass contribution and chemical composition of PM2.5 sources using the receptor models, hourly PM2.5 samples were collected at Baengnyeong Island and Seoul air pollution monitoring supersites from January 2013 to December 2013 were analyzed. A total of 8571 samples were collected and 30 species were analyzed by XRF (X-ray fluorescence spectroscopy), IC (ion chromatography), and TOT (thermal optical transmittance) methods. Positive matrix factorization (PMF) and UNMIX model were used to develop source profiles and to estimate their mass contributions. In the case of Baengnyeong Island site, the PMF modeling identified ten sources such as secondary sulfate, mobile + Br, secondary nitrate, industry, oil combustion, coal combustion, Cu related, sea salt, soil, and biomass burning source. On the other hand, the UNMIX modeling identified eight sources such as oil combustion, soil, coal combustion, sea salt, industry, secondary sulfate, secondary nitrate, and biomass burning, respectively. Detailed results of source apportionment for PM2.5 at two sampling sites will be presented.