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공단지역 일부 주민들의 주택유형 및 실내/외에 따른 VOCs(Benzene, Toluene, Xylene) 농도 및 상관성에 관한 연구
이치원,전혜리,홍은주,유승도,김대선,손부순,Lee, Che-Won,Jeon, Hye-Li,Hong, Eun-Ju,Yu, Seung-Do,Kim, Dae-Sun,Son, Bu-Soon 한국환경보건학회 2010 한국환경보건학회지 Vol.36 No.5
The objectives of this study were to understand the characteristics of residents in industrial areas and factors affecting exposure to the Volatile Organic Compounds(VOCs : Benzene, Toluene, Xylene) as well as to assess exposure levels according to house-type, and whether residents were indoors or outdoors. This research was designed to assess the differences in exposure levels to indoor, outdoor and personal VOCs in a case group and a control group across all areas, as well as in each different area, from May to October 2007, in. 110 residents of the G, Y and H industrial areas of the Jun-nam province. The geometric mea-levels of airborne benzene for the case group 1.31part per billion(ppb) indoor, 1.29 ppb outdoor, and 1.32 ppb for personal exposure were significantly higher than for the control group 0.99, 0.87 and 0.57 ppb, respectively. The geometric mean level for toluene personal exposure across the G, Y and H areas was 5.70 ppb for the case group and 6.31 ppb for the control group. While the outdoor level was 4.27 ppb for the case group and 5.06 ppb for the control group, The indoor level for the case group was 4.78 ppb, similar to that of the control group 4.69 ppb. The geometric mean levels for airborne xylene across the G, Y and H areas were 0.16 ppb(outdoor), 0.12 ppb(personal exposure) and 0.10 ppb(indoor) for the case group, and for the control group were 0.17(personal exposure) and 0.09 ppb(indoor and outdoor). The indoor/outdoor(I/O) ratio for case group is 1.19, while that of the control group is 1.15, indicating that the indoor level was higher than the outdoor level. The interrelationship differences among the three different types of levels in the air in the G, Y and H areas are statistically significant, except for the difference between the indoor and outdoor figures for xylene. In terms of the different types of houses and energy type uesd, the geometric mean level for airborne benzene, toluene and xylene for houses were 1.61, 5.39 and 0.12 ppb, respectively. while the figures for flats were 0.67, 3.32 and 0.05 ppb, respectively. Outdoors, the levels of benzene and toluene in flats were 0.71 and 2.62 ppb, respectively. and 1.58 and 5.35 ppb in houses. For personal exposure, the house levels of benzene, toluene and xylene were all higher than for flats. Houses using oil for heating have significantly higher levels than flats, which use gas for heating.
충남지역 일부 다중이용시설에서 Bioaerosol의 농도에 관한 연구
이치원(Che Won Lee),이종대(Jong Dae Lee),전용택(Yong Teak Jeon),손부순(Bu Soon Son) 한국실내환경학회 2006 한국실내환경학회지 Vol.3 No.1
We surveyed the concentrations of PM₁?, O₃, and bioaerosol in public facilities including restaurants, offices, and private academies in Chung-Nam province area. During 3 months (from August 30, 2005), the bioaerosol concentrations were measured by a single stage air cascade sampler using the inertia collision catching method for the flux of 28.29 ℓ/min. The mean values were measured as 101.1㎍/㎥ for PM₁? and 12.4 ppb for O₃. The concentrations of colony for bacteria and fungi were 464 and 287 CFU/㎥ in restaurants, 223 and 271 CFU/㎥ in offices, and 259 and 107 CFU/㎥ in private academics. It is thus suggested that the regulation of indoor air conditions should be amended to control the quantity of bioaerosol in public facilities.
광양만권 공단지역 일부 지역 주민들의 VOCs 노출농도 및 건강위해성 평가
이치원 ( Che Won Lee ),최수현 ( Su Hyeon Choi ),홍성철 ( Sung Chul Hong ),정은경 ( Eun Kyung Chung ),정용택 ( Yong Taik Chung ),양원호 ( Won Ho Yang ),이종대 ( Jong Dae Lee ),손부순 ( Bu Soon Son ) 한국환경과학회 2011 한국환경과학회지 Vol.20 No.11
This research had been conducted from May to October 2007, studying 110 residents of G, Y, H industrial area in Jun-nam province. It is designed to understand the difference in levels of indoor, outdoor and personal exposure to VOCs(benzene, toluene, Ethylbenzene) and a health risk assessment was conducted to see if there was any fatal cause from carcinogenic or non - carcinogenic elements from a case group and a control group in all areas as well as each different area. In the case of benzene in the air, the geometric levels for the case group are indoor, outdoor and personal exposure; a higher than for the control group. As a results of the Monte - Carlo study about benzene, it shows that the case group`s carcinogenicity is higher than that of the control group and it also shows that, on the CTE, RME condition and Monte - Carlo analysis, all subjects are seen to exceed the carcinogenicity tolerance 10-6 of US EPA. In the case of toluene, ethylbenzene on the CTE, RME condition and Monte - Carlo analysis, these do not exceed the non - carcinogenic standard of 1, but toluene in RME condition for both groups` personal exposure and the indoor and personal exposure of ethylbenzene in Monte - Carlo show that these seem to exceed the standard.
충남지역 초.중.고등학교 교실의 실내 공기 중 포름알데히드(HCHO)의 농도분포에 관한 연구
홍은주,전용택,이치원,노선진,이종대,송미라,손부순,Hong, Eun-Ju,Jeon, Young-Taek,Lee, Che-Won,No, Sun-Jin,Lee, Jong-Dae,Song, Mi-Ra,Son, Bu-Soon 대한환경위생공학회 2007 대한환경위생공학회지 Vol.22 No.2
A pilot study was conducted in order to investigate the concentration of formaldehyde at elementary school, middle school, the high school (108 classrooms) located in Chungchong-namdo during February - September, 2006. Also, divide by (45 classroom) General Classroom and (63 classrooms) Stateroom. The average concentrations of formaldehyde(HCHO) in the general classroom was high by $22.87\;{\pm}\;20.61\;{\mu}g/m^3$ elementary school, $22.08\;{\pm}\;12.70\;{\mu}g/m^3$ high school, $13.58\;{\pm}\;6.60\;{\mu}g/m^3$ middle school. The average concentrations of formaldehyde(HCHO) in the Stateroom was high by $27.58\;{\pm}\;30.5{\mu}g/m^3$ elementary school, $22.03\;{\pm}\;19.12\;{\mu}g/m^3\;22.87\;{\pm}\;20.61\;{\mu}g/m^3$ middle school, $24.92\;{\pm}\;28.15\;{\mu}g/m^3$ high school. There was correlation between formaldehyde concentrations and temperature, humidity in general classroom (P<0.05).
홍은주(Eun-Ju Hong),김정덕(Jung-duck Kim),전용택(Young-Taek Jeon),이치원(Che-Won Lee),문정숙(Jeong-suk Moon),손부순(Bu- Soon Son) 대한환경위생공학회 2007 대한환경위생공학회지 Vol.22 No.3
This research, selected for 40 classrooms(20 old, 20 new) in chungnam area from June 22 to July 19 and from November 21 to December 30, 2003, in order to study of Recognition of Indoor Air Quality of Indoor Environment at School. we used Questionnaire for 193 health teachers, 41 teachers, and 1,359 students. The results of study are as follows. 1. To the question 'Currently Were you damage caused by classroom air?', showed that worry class teachers more than students with 43.9% of class teachers, 35.9% of health teachers and 23.5% of students. 2. To the question ‘What would be an efficient way to manage classroom sanitation?', 50% of class teachers, 40.5% of health teachers and 47.4% of students wanted ‘installation of air purifier.' 3. To the question How are you getting information about indoor air pollution?', showed that all of 3 groups get information through on TV. 4. According to survey, Health teachers who act as health supervisors appeared to have more prior knowledge air quality than class teachers and students. The results of this research show insufficient understanding of health risks from indoor air pollution, and shows possible health problems to students from school indoor air pollution. Therefore, these results suggested that a logical and systematic education program for students about the importance of indoor air quality should be carried out.
홍성철(Sung-Chul Hong),조혜미(Hye-Mee Jou),조태진(Tae-Jin Cho),이치원(Che-Won Lee),정용택(Yong-Taek Jung),손부순(Bu-Soon Son) 대한환경위생공학회 2008 대한환경위생공학회지 Vol.23 No.2
In order to recommend criteria for the administration law on indoor air quality, this study was conducted to examine the distribution and the concentration of indoor air pollutants (PM₁?, CO₂, CO, HCHO, TBC, NO₂, Rn, VOCs, asbestos, O₃) in public facilities in the Chung-Nam area. The concentrations of indoor air pollutants were obtained from sixty seven public facilities such as a cinema, an office, a restaurant, a theater and an academy. This study was performed from August to December, 2005. The results of this study showed that the concentrations of indoor air pollutants such as PM₁?, CO₂, CO, HCHO, TBC, Rn and O₃ were less than the recommended limits. However, the average concentration of VOCs was 521.73㎍/㎥ (GM : 221.69㎍/㎥), which was higher than the recommended limit of 400 ㎍/㎥. Moreover, the average concentration of NO₂ was 345.66ppb (GM : 69.95ppb), which was higher than the recommended limit of 50 ppb. The correlation between the concentrations of indoor air pollutants and the type of facilities with respect to CO₂, TBC and Rn was statistically low (p<0.05). However, the correlation was high in terms of the CO and O₃ concentrations (p<0.01). No relationship between the indoor air pollutants and the type of facilities was observed for PM₁?, VOCs and NO₂. The year of construction was compared to the concentrations of indoor air pollutants. Specifically, when the construction date was less than 3 years, the HCHO, VOCs and TBC concentrations were 44.75 ㎍/㎥, 555.07 ㎍/㎥and 337.79 CFU/㎥, respectively. These concentrations were 120 ㎍/㎥and 211.84 CFUl㎥ higher for VOCs and TBC than the concentrations obtained from the facilities more than 3 years. However, the concentration of HCHO was similar between the facilities older and younger than 3 years of age. Year, temperature, humidity and indoor air pollutant correlation analyses showed that temperature and humidity, temperature and TBC, temperature and O₃, PM₁? and NO₂, HCHO and VOCs, CO₂ and Rn had positive relationships. However temperature and Rn, humidity and CO₂, CO₂ and O₃, Orand Rn had negative relationships. Accordingly, it will be necessary to manage the factors affecting indoor air quality so that the residents can have a more comfortable and healthier living environment. Ultimately, the results of this study are expected to be utilized as baseline data.
노선진(Sun-Jin Noh),정경식(Kyung-Sick Jung),서승표(Seung-Pyo Seo),손부순(Bu-Soon Son),이종화(Jong-Wha Lee),이치원(Che-Won Lee) 대한환경위생공학회 2006 대한환경위생공학회지 Vol.21 No.1
This study is measured in at ozone concentrated places in school and outside of school where places that use copy machine and the others do not use one. Library copy room, Search room, Y-copy, J-copy, R-shop are the places using copy machines and Search room, K-apt, J-billiard hall are the opposite. The measurement was held three times a day-the morning, the afternoon and the evening-once for each at indoor and outdoor. 8 places were lower than domestic ozone concentration standard(0.06ppm). The indoor ozone concentration average was the highest in Search room of school and was the lowest in Library restroom. The outdoor ozone concentration average was the highest in J-billiard hall.