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이은선,이태정,박민빈,박덕신,김신도,김동술 한국대기환경학회 2016 Asian Journal of Atmospheric Environment (AJAE) Vol.10 No.4
The purpose of the study was to initially investigate the concentration patterns of PM1, PM2.5 and PM10 in the Seoul subway lines, and then to figure out the PM behaviors of internal and external sources inside subway tunnels. The PMs were monitored by a light scattering real-time monitor during winter (Jan. 8-26 in 2015) and summer (July 2-Aug. 7 in 2015) in tunnel air, in passenger cabin air, and in the ambient air. The daily average PM10, PM2.5, and PM1 concentrations on these object lines were 101.3± 38.4, 81.5±30.2, and 59.7±19.9 μg/m3, respectively. On an average, the PM concentration was about 1.2 times higher in winter than in summer and about 1.5 times higher in underground tunnel sections than in ground sections. In this study, we also calculated extensively the average PM mass ratios for PM2.5/PM10, PM1/PM10, and PM1/PM2.5; for example, the range of PM2.5/PM10 ratio in tunnel air was 0.82-0.86 in underground tunnel air, while that was 0.48-0.68 in outdoor ground air. The ratio was much higher in tunnel air than in outdoor air and was always higher in summer than in winter in case of outdoor air. It seemed from the results that the in/ out air quality as well as a proper amount of subway ventilation must be significant influence factors in terms of fine PM management and control for the tunnel air quality improvement.
서울시 지하철 터널 내 입자상물질의 농도 특성 및 오염형태 분류
이은선,이태정,박민빈,박덕신,김동술 한국대기환경학회 2017 한국대기환경학회지 Vol.33 No.6
The suspended particulate matter (PM) was measured in subway tunnel of Seoul Line 1 to 9 in order to evaluate the pollution degree and characteristics of the PM in the subway tunnel. Also, to analyze the effect of outdoor aerosol concentration on the PM concentration of subway tunnels, the ambient PM concentration around the subway station was extracted by spatial analysis using PM10 data of Seoul air pollution monitoring network. Finally, in order to understand pollution pattern in the Seoul subway tunnels, cluster analysis was performed based on input data set such as PM levels in tunnel, tunnel depth, length, curvature radius, outdoor ambient air pollution levels and so on. The average concentration of PM10, PM2.5, and PM1 on subway tunnels were 98.0±37.4, 78.4±28.7, and 56.9±19.2 μg/m3, respectively. As a result of the cluster analysis, tunnels from Seoul subway Line-1 to Line-9 were classified into five classes, and the concentrations and physical properties of the tunnels were compared. This study can provide a method to reduce PM concentration in tunnel for each pollution pattern and provide basic information about air quality control in Seoul subway tunnel.
코로나19 전후 겨울/봄철(2018~2020) 평택지역의 대기오염물질 변화 특성
이정아,허종원,김규석,황철원,임유진,박민빈,송이 한국대기환경학회 2021 한국대기환경학회 학술대회논문집 Vol.2021 No.10
코로나19 전후의 대기질 변화를 파악하기 위해 평택지역에서 겨울/봄철(2018~2020) 대기오염물질을 조사하였다. 수동 분석을 통해 이온, 탄소, 중금속 등 PM2.5의 조성을 파악하고, 자동측정장비를 이용하여 PM2.5 농도, 금속 성분 및 가스상 물질(NO₂, SO₂, O₃, NH₃, CO, CH₄)을 분석하였다. 국내외 영향을 파악하기 위해 백령도 및 중국의 PM2.5 데이터와 비교하였으며, 장거리 이동에 따른 오염물질의 유입을 살펴보기 위해 역궤적 분석을 실시하였다. 분석 결과, 연구기간 중 2, 3월의 대기는 중국을 거치는 경로로 유입되었다. 2020년 2~3월 경기도의 PM2.5 평균 농도가 관측 이래 최저 농도를 보였으며, 평택의 2020년 3월 PM2.5 농도는 전년도 3월에 비해 높은 감소를 보였다 (53 → 26 ㎍/㎥). 코로나 전후로 가스상 물질의 변화는 크지 않지만, PM2.5 구성 중 이온, 탄소, 중금속 농도가 감소하였으며, 이 중 이온 성분(SO₄<SUP>2-</SUP>, NO₃<SUP>-</SUP>, NH₄<SUP>+</SUP>)의 감소가 가장 뚜렷하게 나타났다. 중금속 성분중에서는 Pb, V, Ni의 농도가 감소 특성을 보였다. 코로나19로 인한 중국 및 국내의 생산활동량 변화와 국내 미세먼지 계절관리제에 따른 배출량 감소로 인해 대기질이 개선된 것으로 보여짐에 따라 국내 PM2.5 농도 감소를 위해 내부적 감축 노력과 함께 국제공조가 더욱 필요할 것으로 사료된다.
최윤호(Yun-Ho Choi),변주형(Joo-Hyeong Byun),원종무(Jong-Moo Won),김종성(Jong-Sung Kim),신종현(Jong-Hyun Shin),유창숙(Chang-Suk You),정윤하(Yun-Ha Jeong),박민빈(Min-Been Park),오조교(Jo-Gyo Oh) 한국환경보건학회 2020 한국환경보건학회지 Vol.46 No.6
Objectives: The main purpose of this study is to evaluate heavy metal concentrations (Cd, As, Hg, Pb, Cr6+), particle size distribution, hydrochloric acid solubility, and parasite eggs in sand in five non-designated sandy beaches in Gyeonggi Province. Methods: The sampling sites are five non-designated Gyeonggi-do sandy beaches located in Ansan and Hwaseong. ICP-OES and UV, a Vibratory Sieve Shaker, and PCM were respectively used to analyze heavy metal concentrations, particle size distribution, and parasite eggs in the sand. Results: Heavy metals were detected within the beach s safety management standards and some of the detected As and Pb before and after beach opening were lower than one-quarter of the average value. In addition, the results of the T-test to confirm the As and Pb concentration changes before and after opening showed a significant difference in some beaches. The composition of sand was 86.53% according to the particle size distribution standard (2.0-0.02 mm), and the hydrochloric acid solubility was the highest at Gubongsolsup (4.9%) and the lowest at Bangameo-li (0.2%). Parasite eggs were undetected in all beach sand before and after opening. Conclusions: The safety of heavy metal concentrations in sandy beaches was secured in the selected five beaches in Gyeonggi Province. However, continuous efforts are required to make Gyeonggi-do’s beaches suitable according to the Act on the Use and Management of Beaches.