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RISS 인기검색어
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- 저자 : 최영태 ( Choe Young Tae ) (검색결과 2 건)
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허정 ( Heo Jung ),최영태 ( Choe Young Tae ),김동준 ( Kim Dong Jun ),류현수 ( Ryu Hyeon Su ),박진현 ( Park Jin Hyeon ),김은채 ( Kim Eun Chae ),조만수 ( Cho Man Su ),양원호 ( Yang Won Ho ) 대구가톨릭대학교 자연과학연구소 2019 자연과학연구논문집 Vol.17 No.1
Students spend most of their day indoors, especially in school, which makes it easy to be affected by the quality of indoor air at schools. For this reason, indoor air quality in schools is very important. Recently, schools have expanded the installation of air purifiers to help these students take care of their health. The purpose of this study is to evaluate the efficiency of indoor air control according to the type of air purifier. In this study, PM10, CO2, TVOCs, TAB, HCHO, and NO2 were measured indoors and outdoors for each day of operation of air purification systems and for each of the nine schools. The study found that air purifier showed high control effect in the order of complex, floor top, ceiling, air purifier type, air conditioner type, and air-conditioner filter type. The control effect on particulate air pollutants (PM10, TAB) was higher than that of gas-phase air pollutants.
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석유화학단지 주변 주거지역 다환방향족탄화수소(PAHs)의 농도와 Monte-Carlo 모의실험을 통한 위해성평가
박동윤(Dong-Yun Park),최영태(Young-Tae Choe),양원호(Wonho Yang),최길용(Kil-Yong Choi),이채관(Chae-Kwan Lee) 한국환경보건학회 2021 한국환경보건학회지 Vol.47 No.4
Background: Polycyclic aromatic hydrocarbons (PAHs) are generated in petrochemical complexes, can spread to residential areas and affect the health of residents. Although harmful PAHs are mainly present in particle phase, gas phase PAHs can generate stronger toxic substances through photochemical reaction. Therefore, the risk assessment for PAHs around the petrochemical complex should consider both particle and gas phase concentrations. Objectives: This study aimed to investigate the concentration characteristics of particle and gas phase PAHs by season in residential areas around petrochemical complexes, and to assess the risk of PAHs. Methods: Samples were collected for 7 days by seasons in 2014~2015 using a high volume air sampler. Particle and gas phase PAHs were sampled using quartz filter and polyurethane foam, respectively, analyzed by GC- MS. Chronic toxicity and probabilistic risk assessment were performed on 14 PAHs. For chronic toxicity risk assessment, inhalation unit risk was used. Monte-Carlo simulation was performed for probabilistic risk assessment using the mean and standard deviation of measured PAHs. Results: The concentration of particle total PAHs was highest in autumn. The gas phase concentration was highest in autumn. The average gas phase distribution ratio of low molecular weight PAHs composed of 2~3 benzene rings was 85%. The average of the medium molecular weight composed of 4 benzene rings was 53%, and the average of the high molecular weight composed of 5 or more benzene rings was 9%. In the chronic toxicity risk assessment, 7 of the 14 PAHs exceeded the excess carcinogenic risk of 1.00×10-6. In the Monte- Carlo simulation, Benzo[a]pyrene had the highest probability of exceeding 1.00×10-6, which was 100%. Conclusions: The concentration of PAHs in the residential area around the petrochemical complex exceeded the standard, and the excess carcinogenic risk was evaluated to be high. Therefore, it is necessary to manage the air environment around the petrochemical complex.
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