한반도 권역별 대기 중 입자상 탄소 특성 연구

• Published in: 한국대기환경학회지 Vol. 31; no. 4; pp. 330 - 344
• Main Authors: 이영재(Yeong-jae Lee), 박미경(Mi-kyung Park), 정선아(Sun-a Jung), 김선정(Sun-jung Kim), 조미라(Mi-ra Jo), 송인호(In-ho Song), 유영숙(Young-sook Lyu), 임용재(Yong-jae Lim), 김정훈(Jung-hoon Kim), 정해진(Hae-jin Jung), 이상욱(Sang-uk Lee), 최원준(Won-Jun Choi), 안준영(Joon-young Ahn), 이민희(Min-hee Lee), 강현정(Hyun-jung Kang), 박승명(Seung-myeong Park), 서석준(Seok-jun Seo), 정동희(Dong-hee Jung), 현주경(Joo-kyeong Hyun), 박종성(Jong-sung Park), 황태경(Tae-kyung Hwang), 홍유덕(You-deog Hong), 홍지형(Ji-hyung Hong), 신혜정(Hye-jung Shin)
• Format: Journal Article
• Language: Korean
• Published: 한국대기환경학회 2015
• Subjects: 대기과학; Elemental carbon (EC); Carbon percentage; Organic carbon (OC)
• ISSN: 1598-7132; 2383-5346
• DOI: 10.5572/KOSAE.2015.31.4.330

Semi-continuous measurements of $PM_{2.5}$ mass, organic and elemental carbon were made for the period of January to October 2014, at six national air monitoring stations in Korea. OC and EC concentrations showed a clear seasonal variation with the highest in winter (January) and the lowest in summer (August). In winter, the high carbonaceous concentrations were likely influenced by increased fuel combustion from residential heating. OC and EC concentrations varied by monitoring stations with 5.9 and $1.7{\mu}g/m^3$ in Joongbu area, 4.2 and $1.2{\mu}g/m^3$ in Honam area, 4.0 and $1.3{\mu}g/m^3$ in Yeongnam area, 3.7 and $1.6{\mu}g/m^3$ in Seoul Metropolitan area, 3.0 and $0.8{\mu}g/m^3$ in Jeju Island, 2.9 and $0.7{\mu}g/m^3$ in Baengnyeong Island respectively. The concentrations of OC and EC comprised 9.6~ 15.5% and 2.4~ 4.7% of $PM_{2.5}$. Urban Joongbu area located adjacent to the intersection of several main roads showed the highest carbon concentration among six national air monitoring station. On the other hand, background Baengnyeong Island showed the lowest carbon concentration and the highest OC/EC ratio (4.5). During the haze episode, OC and EC were enhanced with increase in $PM_{2.5}$ about 1.3~ 3 and 1.3~ 4.0 times respectively. The concentrations of OC, EC in the Asian dust case are about 1~ 2.4 times greater than in the nondust case. The origins of air mass pathways arriving at Seoul, using the backward trajectory analysis, can be mostly classified into 6 groups (Sector I Northern Korea including the sea of Okhotsk, Sector II Northern China including Mongolia, Sector III Southern China, Sector IV South Pacific area, Sector V Japan, Sector VI Southern Korea area). When an air mass originating from northern China and Mongolia, the OC concentrations were the most elevated, with a higher OC/EC ratio (2.4~ 3.3), and accounting for 17% of $PM_{2.5}$ mass on average.