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RISS 인기검색어
- 검색키워드
- 저자 : 임성국(Sung-Guk Im) (검색결과 7 건)
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임성국 ( Sung Guk Im ),권은경 ( Eun Kyung Kwon ),임창옥 ( Chang Wook Lim ),김동완 ( Dong Wan Kim ),양원호 ( Won Ho Yang ) 대구가톨릭대학교 자연과학연구소 2008 자연과학연구논문집 Vol.6 No.1
Indoor air quality tends to be the dominant contributor to personal exposure, because most people spend over 90% of their time indoors. For some contaminants, exposure to indoor air poses a potentially greater health threat than outdoor air exposures. Indoor nitrogen dioxide(NO2) levels are mainly affected gas range, flue gas spillage, wood-burning appliances and cigarette smoke. In addition, indoor NO2 levels are influenced by such house characterization. So, the purpose of this study was to analysis of relationship between NO2 concentrations(indoor and outdoor) and houses characterization. The measurements of indoor and outdoor NO2 concentration were taken using identical protocols, and information was collected on housing characteristics using identical questionnaire in 5 houses for 5 days in Daegu, Gyeongsangbuk-do. Average indoor and outdoor of NO2 concentration were 25.71±6.33ppb, 33.10±4.93ppb. Also, Relationship between indoor NO2 concentration and outdoor NO2 concentration was statistically correlatied 58% Gas range was the most relation factor contributing to indoor NO2 concentration in house characteristics. And house age and distance from the nearest road house was the most relation factor contributing to outdoor NO2 concentration in house characteristics. But this date was not statistically significance, because of p>0.05. But, NO2 concentrations(indoor and outdoor) and houses characterization appeared positive relationship, so we can conjecture that relationship between NO2 concentrations(indoor and outdoor) and houses characterization.
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공단지역과 시골지역 주택 실내, 실외 및 개인의 이산화질소 노출평가
양원호,임성국,손부선,Yang, Won-Ho,Im, Sung-Guk,Son, Bu-Soon 한국환경보건학회 2008 한국환경보건학회지 Vol.34 No.3
Indoor air quality can be affected by indoor sources, ventilation, decay, and outdoor levels. Various indoor and out-door combustion sources produce nitrogen dioxide ($NO_2$), which is a by-product of high temperature fossil fuel combustion. Especially, the presence of gas ranges and smoking have been identified as major factors contributing to indoor $NO_2$ exposures. In this study, we compared an industrial complex area with a country area by assessing the personal exposure to $NO_2$with measurements of indoor and outdoor $NO_2$ levels in residences and by house characteristics and questionnaire. Personal exposure concentrations were significantly correlated with indoor $NO_2$ concentrations of residences in both the industrial complex area and the country area with correlation coefficients of 0.561 and 0.664, respectively, compared to outdoors. Multiple regression analysis, indicated that indoor $NO_2$ levels in residences were only affected by outdoor levels (p = 0.000) in spite of higher indoor sources such as smoking. Therefore, it is suggested that outdoor air quality as well as indoor air quality should be considered in the reduction of the personal exposure to air pollutants.
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이산화질소의 농도에 따른 흡연자와 비흡연자간의 개인노출평가
권은경 ( Eun Kyoung Kwon ),양원호 ( Won Ho Yang ),정준호 ( Jun Ho Jung ),윤성옥 ( Sung Uk Youn ),명선 ( Seon Myung ),임성국 ( Sung Guk Im ) 대구가톨릭대학교 자연과학연구소 2008 자연과학연구논문집 Vol.6 No.1
Indoor air quality can be affected by indoor sources, ventiliation, decay, and outdoor levels. Various indoor and outdoor combustion sources make nitrogen dioxide(NO2), which is a by-product of high temperature fossil fuel combustion. Especially, the smoking has been identified as one of the major factors contributing to personal NO2 exposures. In this study, we assessed the personal exposure to NO2 with measurements of indoor and outdoor NO2 levels in residence, workplace NO2 levels, house characteristics, and questionnaire, comparing the smoker with non-smoker Personal exposure concentrations were significantly correlated with NO2 concentrations of workplace in both smoker and non-smoker with correlation coefficients of 0.981 and 0.988, respectively. According to -t-test analysis, personal NO2 levels of smoker higher than personal NO2 levels of smoker higher than personal NO2 levels of non-smoker in the same workplace(p=0.002). Therefore, it is suggested that smoking should be considered to reduce the personal exposure to air pollutants.
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산업단지 및 일반생활 지역의 공기 중 톨루엔에 대한 개인노출 및 생체시료의 상관성 분석
이병준(Byoungjun Lee),허 정(Jung Heo),정다영(Dayoung Jung),김순신(Sunshin Kim),류현수(Hyeon-Su Ryu),최민지(Min-Ji Choi),솨이지엔페이(Jian-Fei Shuai),임성국(Sung-Guk Im),양원호(Wonho Yang) 한국환경보건학회 2017 한국환경보건학회지 Vol.43 No.4
Objectives: The purpose of this study was to assess the correlation relationship between personal exposure and urinary hippuric acid in biological monitoring for airborne toluene in an industrial complex and in general environments. Methods: Personal exposure to toluene and its metabolite, hippuric acid, in urine were simultaneously measured in occupational environments area near an industrial complex and in general environments. The study subjects were divided into three types: 137 workers who use organic solvents in the workplace, 210 residents living near a dyeing industrial complex, and 379 residents living in general environments. The toluene exposures of workers and residents were measured by a passive sampler for four days. The urine of participants was sampled when the passive samplers of personal exposure were collected. Results: The toluene and hippuric acid concentrations of workers were the highest, followed by the concentrations of residents living near a dyeing industrial complex and residents living in general environments. The coefficient of correlation between the concentrations of toluene and hippuric acid among workers was 0.749 (p<0.01) in the workplace. On the contrary, correlations between the concentrations of toluene and hippuric acid among residents living near a dyeing industrial complex and residents living in general environments were all not significant. The relationship between the concentrations of hippuric acid and toluene in three types could be described by the exponential growth model. Conclusions: This study analyzed the relationships between toluene exposure and the concentrations of hippuric acid in urine in high, middle, and low exposure environments, and could be described by the exponential growth model.
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