A5067538370- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Air Quality Monitoring and Forecasting
- Atmospheric and Environmental Gas Dynamics
- Atmospheric Ozone and Climate
- Climate Change and Health Impacts
- Extraction and Separation Processes
- Advanced Chemical Sensor Technologies
- Vehicle emissions and performance
- COVID-19 impact on air quality
- Engineering Applied Research
- Energy and Environmental Systems
- Internet of Things and Social Network Interactions
- Bauxite Residue and Utilization
- Nanoparticles: synthesis and applications
- Radiation Detection and Scintillator Technologies
- Recycling and Waste Management Techniques
- Global Health Care Issues
- Marine and Coastal Research
- Urban Transport and Accessibility
- Recycling and utilization of industrial and municipal waste in materials production
- Distributed Sensor Networks and Detection Algorithms
- COVID-19 diagnosis using AI
- Healthcare and Environmental Waste Management
- Atmospheric aerosols and clouds
National Institute of Environmental Research
2018-2025
East Asian countries experience severe air pollution owing to their rapid development and urbanization induced by substantial economic activities. South Korea China are among the most polluted with high mass concentrations of PM2.5. Although occurrence transboundary neighboring has been recognized for a long time, studies involving simultaneous ground-based PM2.5 monitoring source apportionment in have not conducted date. This study performed daily Seoul Beijing from January December 2019....
This study used observational data and a chemical transport model to investigate the contributions of several factors recent change in air quality China South Korea from 2016 2020. We focused on analysis, which could reflect annual trend emission reduction adjust existing amounts apply it into model. The observation showed that particulate matter (PM2.5) concentrations during winter 2020 decreased by -23.4 % (-14.68 μg/m3) - 19.5 (-5.73 respectively, compared with 2016. Meteorological...
Abstract PM 2.5 pollution is problematic in megacities on the western coast South Korea (Seoul, Incheon, and Gwangju). As these are located downwind of China, their air quality easily affected by local long-range transport sources. samples collected Seoul ( n = 222), Incheon 221), Gwangju 224) from September 2020 to March 2022, were chemically characterized. Dispersion normalized positive matrix factorization was applied speciated data provide source apportionments. Nine common sources...
Abstract. For PM2.5 filter samples collected daily at the Chinese Research Academy of Environmental Sciences (Beijing, China) from December 2013 to February 2014 (the winter period), chemical characteristics and sources were investigated with an emphasis on haze events in different alert levels. During 3 months, average concentration was 89 µg m−3, exceeding national standard 75 m−3 24 h. The maximum 307 which characterizes developed-type pollution (PM2.5 / PM10>0.5) World Health...
South Korea and China have implemented increasingly stringent mitigation measures to reduce the health risks from PM
East Asian countries have been conducting source apportionment of fine particulate matter (PM
China and South Korea are the most polluted countries in East Asia due to significant urbanization extensive industrial activities. As neighboring countries, collaborative management plans maximize public health both can be helpful reducing transboundary air pollution. To support such planning, PM2.5 inorganic organic species were determined simultaneously collected integrated filters. The resulting data used as inputs positive matrix factorization, which identified nine sources at ambient...
Abstract. For PM2.5 filter samples collected daily at the Chinese Research Academy of Environmental Sciences (Beijing, China) from December 2013 to February 2014 (the winter period), chemical characteristics and sources were investigated with an emphasis on haze events in different alert levels. During three months, average concentration was 89 µg m−3, exceeding national standard 75 m−3 24 h. The maximum 307 which characterizes developed-type pollution (PM2.5/PM10 > 0.5) World Health...
Prior knowledge of the effectiveness new observation instruments or data streams for air quality can contribute significantly to shaping policy and budget planning related those data. In view this, one main purposes development application Observing System Simulation Experiments (OSSE) is assess potential impact observations on current monitoring forecasting systems, thereby making this framework valuable. This study introduces overall OSSE established support details its individual...
PM2.5 mass and its constituent species were analyzed in two coastal cities (Ulsan, South Korea, Dalian, China) between July 13, 2018, September 20, 2019. Ten nine sources identified Ulsan respectively, using positive matrix factorization (PMF). In Ulsan, three (secondary nitrate [SN], secondary sulfate [SS], traffic) contributed ~83.0% of the concentration (23.7 µg m-3) during heating period. four (SN, SS, traffic, residential burning) accounted for ~84.3% total (47.8 m-3). Higher...
Abstract Ambient fine particulate matter (PM2.5) is one of the most concerning pollutants, characterized by its diverse chemical composition. Although various studies have revealed PM2.5 components, there limited knowledge on how to reduce concentrations through administrative policies focusing source management. We compared compositional characteristics and performed apportionment using positive matrix factorization (PMF) in four metropolitan cities (Seoul, Daejeon, Gwangju, Ulsan) South...
The purpose of this study is to examine the applicability sensor monitoring systems as part a method for using gas sensors conduct real-time and measurement emission sources at relatively low cost. To test applicability, performance assessment experiments were conducted with electrochemical (NO, NO2, SO2, CO), photoionization (VOC), which are air pollutant sensors. All tests temperature 25oC humidity 50% accurate dilution concentration was made exposed each continuously. VOCP showed fastest...
Abstract South Korea is one of the East Asian countries suffering severe ambient PM 2.5 pollution which has been continuously reported to a risk factor driving both death and disability in many parts world. We investigated associations cause-specific mortality with chemical constituents source contributions four metropolitan cities, namely Seoul, Daejeon, Gwangju Ulsan, by applying generalized linear model (GLM) results positive matrix factorization (PMF) modeling. The cities represent each...
This study used observational data and a chemical transport model to investigate the contributions of several factors recent change in air quality China South Korea from 2016 2020. We focused on analysis, which could reflect annual trend emission reduction adjust existing amounts apply it into model. The observation showed that particulate matter (PM2.5) concentrations during winter 2020 decreased by -23.4% (–14.68 µg/m3) -19.5% (–5.73 respectively, compared with 2016. Meteorological...
 The factors affecting the change in air quality must be objectively analyzed, and this study used chemical transport model observational data to investigate contributions of each factor. The analysis focuses on changes China South Korea from 2016 2020, existing emission were adjusted based reflect trend reduction into model. revealed that Korea, respectively, PM2.5 concentration winter 2020 reduced by -23.7% (-11.58 µg/m3) -19.2% (-4.97 compared 2016. Meteorological...