Pub Date : 2022-06-30DOI: 10.5572/kosae.2022.38.3.437
Myoung-Ki Song, Jinsoo Park, Minsung Kim, Jinsoo Choi, Sea-Ho Oh, Seoyeong Choe, Geun-Hye Yu, T. Lee, M. Bae
Scientific analyses were carried out to investigate the characteristics of both ultra-fine (PM1.0) and fine particulate matters (PM2.5) based on chemical speciation collected at National Institute of Environmental Research in Incheon, Repulic of Korea. In this study, PM1.0 and PM2.5 mass were monitored using two betaray instruments simultaneously. Organic carbon, elemental carbon, water soluble ionic compounds, and polycyclic aromatic hydrocarbons were analyzed using carbon analyzer, ion chromatography, and gas chromatography, respectively. In addition, the oxidation potential using dithiothreitol were investigated to compare the level of toxicities in PM1.0 and PM2.5. As a result, although characteristics of major chemical components in PM1.0 and PM2.5 were similar, oxidation potential in PM1.0 were presented higher than that in PM2.5 due to organic compounds related to toxic compounds. This result will be able to investigate the health studies and policy strategies associated with PM1.0.
{"title":"Chemical Characteristics and Oxidation Potential of PM1.0 at a Suburban Location in Metropolitan Area","authors":"Myoung-Ki Song, Jinsoo Park, Minsung Kim, Jinsoo Choi, Sea-Ho Oh, Seoyeong Choe, Geun-Hye Yu, T. Lee, M. Bae","doi":"10.5572/kosae.2022.38.3.437","DOIUrl":"https://doi.org/10.5572/kosae.2022.38.3.437","url":null,"abstract":"Scientific analyses were carried out to investigate the characteristics of both ultra-fine (PM1.0) and fine particulate matters (PM2.5) based on chemical speciation collected at National Institute of Environmental Research in Incheon, Repulic of Korea. In this study, PM1.0 and PM2.5 mass were monitored using two betaray instruments simultaneously. Organic carbon, elemental carbon, water soluble ionic compounds, and polycyclic aromatic hydrocarbons were analyzed using carbon analyzer, ion chromatography, and gas chromatography, respectively. In addition, the oxidation potential using dithiothreitol were investigated to compare the level of toxicities in PM1.0 and PM2.5. As a result, although characteristics of major chemical components in PM1.0 and PM2.5 were similar, oxidation potential in PM1.0 were presented higher than that in PM2.5 due to organic compounds related to toxic compounds. This result will be able to investigate the health studies and policy strategies associated with PM1.0.","PeriodicalId":16269,"journal":{"name":"Journal of Korean Society for Atmospheric Environment","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45116596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.5572/kosae.2022.38.3.414
Ga-Lam Kim, Juseon Shin, Du-Sung Kim, Ju-Yeol Sim, So-Young Joo, Jeong Kim, Sung Hwan Cho, Cheon Woong Kang, Y. Noh
The Korean government enforces a fine dust seasonal management system to reduce aerosols emitted from illegal incineration in rural areas during the winter and spring period. The burning of agricultural by-products in rural areas is prohibited by law but is still prevalent. Illegal incinerations mainly occur on a small scale in a wide area, so managing and controlling them is difficult. To estimate the emission flux of PM from agricultural burning, we used scanning Light Detection and Range (Lidar). The scanning Lidar can observe mass concentration in an area with a radius of 5 km at 30-minute intervals with a distance resolution of 30 m. We calculated the upward velocity using the relationship between the plume central velocity and mass entrainment rate in the plume rise model, then estimated the emission flux using mass concentration and plume distribution range. The emission fluxes of PM 2.5 in stagnant and diffused cases were 1.17 kg/h and 2.09 kg/h, respectively. Annualized values of the emission flux were 0.11 tons/year and 0.20 tons/year according to the number of observations. These were slightly lower than the national emission inventory (4.98 tons/year). The difference might be because the emission inventory was overestimated or there were errors in the process of annualization.
{"title":"Estimation of Emission Flux of Particulate Matter by Agricultural Burning in Rural Areas using Scanning LIDAR","authors":"Ga-Lam Kim, Juseon Shin, Du-Sung Kim, Ju-Yeol Sim, So-Young Joo, Jeong Kim, Sung Hwan Cho, Cheon Woong Kang, Y. Noh","doi":"10.5572/kosae.2022.38.3.414","DOIUrl":"https://doi.org/10.5572/kosae.2022.38.3.414","url":null,"abstract":"The Korean government enforces a fine dust seasonal management system to reduce aerosols emitted from illegal incineration in rural areas during the winter and spring period. The burning of agricultural by-products in rural areas is prohibited by law but is still prevalent. Illegal incinerations mainly occur on a small scale in a wide area, so managing and controlling them is difficult. To estimate the emission flux of PM from agricultural burning, we used scanning Light Detection and Range (Lidar). The scanning Lidar can observe mass concentration in an area with a radius of 5 km at 30-minute intervals with a distance resolution of 30 m. We calculated the upward velocity using the relationship between the plume central velocity and mass entrainment rate in the plume rise model, then estimated the emission flux using mass concentration and plume distribution range. The emission fluxes of PM 2.5 in stagnant and diffused cases were 1.17 kg/h and 2.09 kg/h, respectively. Annualized values of the emission flux were 0.11 tons/year and 0.20 tons/year according to the number of observations. These were slightly lower than the national emission inventory (4.98 tons/year). The difference might be because the emission inventory was overestimated or there were errors in the process of annualization.","PeriodicalId":16269,"journal":{"name":"Journal of Korean Society for Atmospheric Environment","volume":"52 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70737954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.5572/kosae.2022.38.3.451
K. Yu, Byung-Tae Lee, K. Han, Hyun-Soo Kim, Hyung-Moon Yim, Myoung-Ki Song, M. Bae
Open burning of agricultural residues is one of the significant sources of air pollution. The quantification of air pollutants emissions by open burning requires the fuel loadings calculated from the biomass and the crop’s burning ratio that indicates the mass fraction of crop residues incinerated to the total crop residues. The survey of 1,004 domestic farmers in 2020 found that the burning ratio was 13.6%, and the compost recycling was 73.5%. The burning ratio varied from region and crop. The burning ratio in Gyeonggi-do was the highest at 31.7%, followed by Chungcheongbuk-do at 21.6%, Jeollabuk-do at 19.1%, and Gyeongsangnam-do at 15.5%. The pepper’s burning ratio was 33.6%, followed by pear at 27.5%, peanut at 25.6%, and barley at 21.0%. Compared to 2014, the burning ratio decreased significantly. The average burning ratio of ten crops dropped by 71.6%, and particularly that of fruit trees’ residue such as pear, apple, peach, and grape decreased by 78.5%. The biomass conversion factors to the annual crop yields provided by Statistics Korea reasonably presented the annual mass of agricultural crop residues. Finally, the fuel loadings at the agricultural open burning for twenty residues were estimated by multiplying the burning ratios by the mass of agricultural crop residues. As of 2019, the fuel loading of apples was the highest at 128,217 ton/yr, and those of pepper and barley were 68,523 ton/yr and 51,661 ton/yr, respectively. Open burning of agricultural crop residues is one of the long-standing treatment ways. However, to reduce the emission of air pollutants, it is most effective to promote recycling, such as compost or livestock feed.
{"title":"Estimation of Fuel Loadings of Domestic Agricultural Crop Residues to Determine the Air Pollutants Emissions","authors":"K. Yu, Byung-Tae Lee, K. Han, Hyun-Soo Kim, Hyung-Moon Yim, Myoung-Ki Song, M. Bae","doi":"10.5572/kosae.2022.38.3.451","DOIUrl":"https://doi.org/10.5572/kosae.2022.38.3.451","url":null,"abstract":"Open burning of agricultural residues is one of the significant sources of air pollution. The quantification of air pollutants emissions by open burning requires the fuel loadings calculated from the biomass and the crop’s burning ratio that indicates the mass fraction of crop residues incinerated to the total crop residues. The survey of 1,004 domestic farmers in 2020 found that the burning ratio was 13.6%, and the compost recycling was 73.5%. The burning ratio varied from region and crop. The burning ratio in Gyeonggi-do was the highest at 31.7%, followed by Chungcheongbuk-do at 21.6%, Jeollabuk-do at 19.1%, and Gyeongsangnam-do at 15.5%. The pepper’s burning ratio was 33.6%, followed by pear at 27.5%, peanut at 25.6%, and barley at 21.0%. Compared to 2014, the burning ratio decreased significantly. The average burning ratio of ten crops dropped by 71.6%, and particularly that of fruit trees’ residue such as pear, apple, peach, and grape decreased by 78.5%. The biomass conversion factors to the annual crop yields provided by Statistics Korea reasonably presented the annual mass of agricultural crop residues. Finally, the fuel loadings at the agricultural open burning for twenty residues were estimated by multiplying the burning ratios by the mass of agricultural crop residues. As of 2019, the fuel loading of apples was the highest at 128,217 ton/yr, and those of pepper and barley were 68,523 ton/yr and 51,661 ton/yr, respectively. Open burning of agricultural crop residues is one of the long-standing treatment ways. However, to reduce the emission of air pollutants, it is most effective to promote recycling, such as compost or livestock feed.","PeriodicalId":16269,"journal":{"name":"Journal of Korean Society for Atmospheric Environment","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43660654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.5572/kosae.2022.38.3.354
I. Hwang
{"title":"Estimation of Source Apportionment for PM2.5 Data of Air Pollution Monitoring Site in Pohang Using the EPA-PMF Model","authors":"I. Hwang","doi":"10.5572/kosae.2022.38.3.354","DOIUrl":"https://doi.org/10.5572/kosae.2022.38.3.354","url":null,"abstract":"","PeriodicalId":16269,"journal":{"name":"Journal of Korean Society for Atmospheric Environment","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45854945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.5572/kosae.2022.38.3.470
Geun-Hye Yu, Myoung-Ki Song, Minsung Kim, Sea-Ho Oh, K. Yu, Byung T. Lee, K. Han, M. Bae
{"title":"Determination of Emission Factor for Chemical Compounds from Agricultural Crop Residues Burning using Closed Chamber System : Distributions of Organic Compounds","authors":"Geun-Hye Yu, Myoung-Ki Song, Minsung Kim, Sea-Ho Oh, K. Yu, Byung T. Lee, K. Han, M. Bae","doi":"10.5572/kosae.2022.38.3.470","DOIUrl":"https://doi.org/10.5572/kosae.2022.38.3.470","url":null,"abstract":"","PeriodicalId":16269,"journal":{"name":"Journal of Korean Society for Atmospheric Environment","volume":"24 28","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41266565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.5572/kosae.2022.38.3.341
Junho Ryu, Siwon Jeong, Gwangryeun Kim, Whokyung Park, S. Park
{"title":"Evaluation of Measurement Reliability of Light-scattering PM2.5 Monitor Applied with Referenced-channel Calibration Technology","authors":"Junho Ryu, Siwon Jeong, Gwangryeun Kim, Whokyung Park, S. Park","doi":"10.5572/kosae.2022.38.3.341","DOIUrl":"https://doi.org/10.5572/kosae.2022.38.3.341","url":null,"abstract":"","PeriodicalId":16269,"journal":{"name":"Journal of Korean Society for Atmospheric Environment","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49243212","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.5572/kosae.2022.38.3.394
J. Jee, Chang-Rae Cho, Sanghyun Kim, M. Song
In order to analyze the characteristics of fine particles on the Korean Peninsula, the synoptic wind field, aerosol optical depth distribution, and surface observation data were used around the East Asia and the Korean Peninsula. In addition, the relationship and relative influence between high-concentration fine particles cases and meteorological variables were evaluated using the General Boosted Machine (GBM) model. In 2020, relatively low concentrations of fine particles appeared due to the weakening of the meridional atmospheric pressure deviation and the weakening of the zonal flow in East Asia. AOD around the Korean Peninsula was high mainly in Incheon and Taean Peninsula, and high AOD was found mainly in the West Sea due to long-range transport from China. In the case of haze or high-concentration fine particles in winter, the PM 2.5 /PM 10 ratio was greater than 0.6, and the ratio increased during long-range transport. In the high-concentration fine particles case, the temperature, wind speed, and boundary layer height (PBLH) were lower than the overall data, and the PM 2.5 /PM 10 ratio was high. When high-concentration cases were analyzed using the GBM model, the fine particles concentration had a high correlation with meteorological and temporal variables. As a result, the relative influence on the fine particles concentration was highest in order of year, week, air temperature, the day of the week, relative humidity, PBLH, hour, wind direction, and wind speed.
{"title":"An Analysis of Meteorological Characteristics for Fine Particles on the Korean Peninsula during Wintertime, 2015-2021","authors":"J. Jee, Chang-Rae Cho, Sanghyun Kim, M. Song","doi":"10.5572/kosae.2022.38.3.394","DOIUrl":"https://doi.org/10.5572/kosae.2022.38.3.394","url":null,"abstract":"In order to analyze the characteristics of fine particles on the Korean Peninsula, the synoptic wind field, aerosol optical depth distribution, and surface observation data were used around the East Asia and the Korean Peninsula. In addition, the relationship and relative influence between high-concentration fine particles cases and meteorological variables were evaluated using the General Boosted Machine (GBM) model. In 2020, relatively low concentrations of fine particles appeared due to the weakening of the meridional atmospheric pressure deviation and the weakening of the zonal flow in East Asia. AOD around the Korean Peninsula was high mainly in Incheon and Taean Peninsula, and high AOD was found mainly in the West Sea due to long-range transport from China. In the case of haze or high-concentration fine particles in winter, the PM 2.5 /PM 10 ratio was greater than 0.6, and the ratio increased during long-range transport. In the high-concentration fine particles case, the temperature, wind speed, and boundary layer height (PBLH) were lower than the overall data, and the PM 2.5 /PM 10 ratio was high. When high-concentration cases were analyzed using the GBM model, the fine particles concentration had a high correlation with meteorological and temporal variables. As a result, the relative influence on the fine particles concentration was highest in order of year, week, air temperature, the day of the week, relative humidity, PBLH, hour, wind direction, and wind speed.","PeriodicalId":16269,"journal":{"name":"Journal of Korean Society for Atmospheric Environment","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48192172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-30DOI: 10.5572/kosae.2022.38.2.175
Jeong-Seok Chae, J. Chae, Min-Young Kim, Jun-Min Jeon, Tae-Jung Lee, Youngchul Jo
{"title":"Inventory of VOCs Including Ozone Precursors Emitted from Residential Workplaces and Evaluation of Contribution to Ozone Formation","authors":"Jeong-Seok Chae, J. Chae, Min-Young Kim, Jun-Min Jeon, Tae-Jung Lee, Youngchul Jo","doi":"10.5572/kosae.2022.38.2.175","DOIUrl":"https://doi.org/10.5572/kosae.2022.38.2.175","url":null,"abstract":"","PeriodicalId":16269,"journal":{"name":"Journal of Korean Society for Atmospheric Environment","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42796259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-30DOI: 10.5572/kosae.2022.38.2.304
Kwonho Lee, Sung-Kyun Shin
In September 2021, China encountered the shortage of coal and emission activity shrunk to the lowest it had been since February 2020, when coronavirus lockdowns paralyzed the economy. Despite social and economic concerns, this event has brought unexpected positive consequences for environmental quality. In this study, we investigated the impact of restricted thermal power plants operations on local air quality is investigated. For this purpose, social statistics, satellite observations, ground-based air quality measurements, and meteorology data were analyzed to estimate the spatio-temporal characteristics of air pollutants. As a result, significant reductions in the concentrations of air pollutants were found. It was about 11.13% lower than the reduced concentration due to the coronavirus lockdowns period in China. Compared to the average value during the normal year for 2015-2019, large decreased values of SO2 (-38.81%), CO (-24.78%), NO2 (-54.26%), PM 10 (-51.60%), and PM2.5 (-56.35%) were measured in Seoul, Korea. Satellite observation data confirm that these large drop in air pollution levels occurred in both countries, serving as a valuable proof of the emission control impact on local air quality. Moreover, the easterly wind along with the increased precipitation rate in China could affect the wet deposition and dilution of air pollutants.
{"title":"Effect of Reduced Emissions from Thermal Power Plants in China on Local Air Quality Improvement","authors":"Kwonho Lee, Sung-Kyun Shin","doi":"10.5572/kosae.2022.38.2.304","DOIUrl":"https://doi.org/10.5572/kosae.2022.38.2.304","url":null,"abstract":"In September 2021, China encountered the shortage of coal and emission activity shrunk to the lowest it had been since February 2020, when coronavirus lockdowns paralyzed the economy. Despite social and economic concerns, this event has brought unexpected positive consequences for environmental quality. In this study, we investigated the impact of restricted thermal power plants operations on local air quality is investigated. For this purpose, social statistics, satellite observations, ground-based air quality measurements, and meteorology data were analyzed to estimate the spatio-temporal characteristics of air pollutants. As a result, significant reductions in the concentrations of air pollutants were found. It was about 11.13% lower than the reduced concentration due to the coronavirus lockdowns period in China. Compared to the average value during the normal year for 2015-2019, large decreased values of SO2 (-38.81%), CO (-24.78%), NO2 (-54.26%), PM 10 (-51.60%), and PM2.5 (-56.35%) were measured in Seoul, Korea. Satellite observation data confirm that these large drop in air pollution levels occurred in both countries, serving as a valuable proof of the emission control impact on local air quality. Moreover, the easterly wind along with the increased precipitation rate in China could affect the wet deposition and dilution of air pollutants.","PeriodicalId":16269,"journal":{"name":"Journal of Korean Society for Atmospheric Environment","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48966061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-30DOI: 10.5572/kosae.2022.38.2.294
Seoyeong Choe, Sea-Ho Oh, Myoungki Song, Eunyoung Kim, Yongmin Lee, S. Seo, G. Park, Minsung Kim, Kyungmin Kim, Taehyoung Lee, M. Bae
Seasonal samples located in Seoul were collected from inside and outside tunnel at the same time to determine the oxidation potential (OP) using dithiothreitol (DTT) method corresponding to real-world vehicle emissions. First, the novel quantitative oxidation potential method was developed using 9,10-phenanthraquinone. Second, quinone normalized DTT-OP was utilized to calculate the seasonal oxidation potential of unit vehicle emission with tunnel flow coefficient. As a result, the overall average for seasonal oxidation potential of unit vehicle emission were shown as 169 μM/veh · km. In addition, the highest concentration was presented from midnight through 6 a.m. for all seasons due to complex parameters including vehicle speeds. This result will be able to investigate the health studies associated with unit of vehicle emissions in real atmosphere.
{"title":"Seasonal Oxidation Potential of Vehicle Emission using Tunnel Flow Coefficient","authors":"Seoyeong Choe, Sea-Ho Oh, Myoungki Song, Eunyoung Kim, Yongmin Lee, S. Seo, G. Park, Minsung Kim, Kyungmin Kim, Taehyoung Lee, M. Bae","doi":"10.5572/kosae.2022.38.2.294","DOIUrl":"https://doi.org/10.5572/kosae.2022.38.2.294","url":null,"abstract":"Seasonal samples located in Seoul were collected from inside and outside tunnel at the same time to determine the oxidation potential (OP) using dithiothreitol (DTT) method corresponding to real-world vehicle emissions. First, the novel quantitative oxidation potential method was developed using 9,10-phenanthraquinone. Second, quinone normalized DTT-OP was utilized to calculate the seasonal oxidation potential of unit vehicle emission with tunnel flow coefficient. As a result, the overall average for seasonal oxidation potential of unit vehicle emission were shown as 169 μM/veh · km. In addition, the highest concentration was presented from midnight through 6 a.m. for all seasons due to complex parameters including vehicle speeds. This result will be able to investigate the health studies associated with unit of vehicle emissions in real atmosphere.","PeriodicalId":16269,"journal":{"name":"Journal of Korean Society for Atmospheric Environment","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41376442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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