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Lu Yang,Ning Tang,Atsushi Matsuki,Akinori Takami,Shiro Hatakeyama,Naoki Kaneyasu,Edward G. Nagato,Kei Sato,Ayako Yoshino,Kazuichi Hayakawa 한국대기환경학회 2018 Asian Journal of Atmospheric Environment (AJAE) Vol.12 No.4
This is the first comparative study to examine two different background monitoring sites in Japan to compare differences in the concentration and composition of long-range-transported polycyclic aromatic hydrocarbons (PAHs) from the Asian continent. This study chose the Noto Peninsula (the Kanazawa University Wajima Air Monitoring Station; WAMS) and Fukue Island (the Fukue-jima Atmosphere and Aerosol Monitoring Station; FAMS) to compare 10 weekly periods in 2009 and 2010 from autumn to spring, seasons that are strongly influenced by the Asian continent. The PAHs concentration differed significantly for most periods at these two sites. The backward trajectory analysis found that the low height of the air mass may cause the low concentration and the similar air mass condition could result in the similar concentration. The concentration of long-range-transported PAHs depended more on the source of the coal combustion areas such as Northeast China in heating period.
Study on the International Intensive Measurements in Northeast Asia Relating to the FRIEND Project
이지이,송미정,장경순,김창혁,Zhijun Wu,Atsushi Matsuki,Amgalan Natsagdorj 한국대기환경학회 2021 한국대기환경학회 학술대회논문집 Vol.2021 No.10
Air pollution in Northeast Asia is not a problem that can be characterized and mitigated by the effort of a single country but requires an international and cross-border perspective. Therefore, the Center for Fine Particle Research Initiative in East Asia Considering National Differences (FRIEND) project has been launched since 2020 to characterize air pollution in Northeast Asia with effective collaboration. As one part of FRIEND project, this study aims to elucidate the spatio-temporal characteristics of atmospheric aerosols in Northeast Asia and provide scientific knowledge on their evolution of air pollution in the region by international intensive measurement. This will be done by creating an exceptionally strong network of key monitoring activities across the nations, including Korea, China, Mongolia, and Japan. The plan for eight intensive field campaigns regarding the high-resolution physical and chemical measurement of aerosols and precursors was also established to achieve this objective. This presentation will introduce the details on the study for the characteristics of haze formation in Northeast Asia by international intensive measurements.
동북아시아 지역의 PM<SUB>2.5</SUB>의 시공간적 분포 비교: 2020년 겨울 측정자료를 바탕으로
김나경,김영성,송창근,Amgalan Natsagdorj,Zhijun Wu,Atsushi Matsuki,송미정,김창혁,장경순,이광렬,박승명,신혜정,김대곤,이지이 한국대기환경학회 2021 한국대기환경학회 학술대회논문집 Vol.2021 No.10
동북아시아 지역의 대기오염은 한 국가의 노력으로 특성화되고 완화될 수 있는 문제가 아니며 국경을 초월한 협력이 필요하다. 이에 우리나라에서는 2020년부터 동북아시아 미세먼지 연구단(FRIEND) 프로젝트를 출범시켜 동북아 대기오염을 효과적으로 규명하고자 노력하고 있다. 본 연구는 FRIEND 프로젝트의 일환으로서 동북아시아 지역의 대기 중 에어로졸의 시공간적 특성을 규명하고자 하였다. 한국의 서울과 서산, 중국의 베이징, 몽골의 울란바토르 및 일본 노토를 포함하는 4개국 5개 모니터링 지점을 선정하여 측정 네트워크를 구축하였고, 2020년 12월 15일부터 2021년 1월 14일까지 한 달간 1차 PM2.5 및 가스상 오염물질 집중 측정을 진행하였다. 대기오염물질 농도는 울란바토르가 가장 높았으며, 베이징, 서울, 서산이 비슷한 수준이었고, 노토는 대기오염물질 농도가 매우 낮았다. 대기질 관리가 아직 상대적으로 강력하지 않은 울란바토르의 경우 PM2.5 평균농도가 90 ㎍ m<SUP>-3</SUP> 정도였고, 대기질 관리가 집중적으로 이뤄지는 북경, 서울, 서산 지역의 평균 PM2.5 농도는 30 ㎍ m<SUP>-3</SUP> 정도였으며, 동북아의 배경 농도 지역인 노토 지역의 평균 PM2.5 농도는 10 ㎍ m<SUP>-3</SUP>이었다. 동북아시아의 대기오염 상태는 최근 수십 년 동안 개선되었지만 PM2.5의 농도는 미국 LA나 캐나다 토론토의 연평균 PM2.5 10 ㎍ m<SUP>-3</SUP> 이하에 비교해서 여전히 높은 수준이다. 따라서 동북아 국가 간 지속적인 협력을 통해 대기 환경을 개선할 필요가 있다.
TENG ZIHUI,신선민,김기애,이연정,심아윤,김경진,Amgalan Natsagdorj,Zhijun Wu,Atsushi Matsuki,송미정,김창혁,장경순,이지이 한국대기환경학회 2021 한국대기환경학회 학술대회논문집 Vol.2021 No.10
In this study, to understand the characteristic of the composition of organic compounds in PM2.5 and to evaluate major factors for determining organic aerosols in Northeast Asia, the PM2.5 filters were collected simultaneously at three major urban sites (Ulaanbaatar, Beijing, Seoul) in Northeast Asia from Dec. 15, 2020, to Jan. 15, 2021. The samples were extracted using the organic solvent and then analyzed by GC-MS to obtain n-alkanes and PAHs concentrations. Total n-alkanes concentration in Ulaanbaatar (209±156 ng/m³) presented about five times as high as Beijing (46.8±23.5 ng/m³) and about six times as high as Seoul (35.6±6.63 ng/m³). For PAHs, Ulaanbaatar showed extremely high values as 609±378 ng/m³, which is 24 times as high as Beijing (25.8±14.5 ng/m³) and 46 times as high as Seoul (13.2±3.47 ng/m³). It indicated that the emission from fossil fuel combustion was the most significant in Ulaanbaatar during the winter period. From the contribution of plant wax (WNA%) and carbon preference index calculated from n-alkanes, it can be suggested that aerosol in Ulaanbaatar had the most significant contribution from anthropogenic emission than biogenic emission. From this study, the contribution of anthropogenic emissions for three sites will be compared.