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문경환,김영규,정문호 ( Kyong Whan Woon,Young Gyu Kim,Moon Ho Chung ) 한국하천호수학회 1992 생태와 환경 Vol.25 No.4
Kyongan Stream, one of the first stream flowing into the Han River, was investigated in the viewpoint of its pollutants load run-off into Pal`tang Reservoir which is the most important sorurce for the tap water supply to Seoul City. DO, BOD, COD, SS, and pH values were measured at five selected stations in the stream monthly during the period from January 1989 to December 1991. The amount of pollutants load at each station was also computed on the basis of data adopted from Yongin and Kwangju Gun. Stations 1, 2 located in the upstream were revealed to be heavely contaminated by social sewage and breeding activities of the domestic animal. Stations 4, 5 in downstream were, however, measured to become somewhat better in DO, BOD, COD and SS values possibly due to the increase of the flowing amount by the joining of second streams, i. e., Nungwon Stream. Values of pH ranged from 6.9-8.1 all the year round. DO value showed to decreased in summer season, however, BOD and COD values increased in the winter. Decreaseof DO value might be due to the increase of water temperature, since increase of BOD and COD values by the increase of the flowing amount.
실내 공기 중 일부 알데하이드류에 대한 위해도 평가 - 일부 주택 및 아토피 환자 주택을 대상으로
문경환,변상훈,최달웅,이은일,오은하,김영환,Moon Kyong Whan,Byeon Sang Hoon,Choi Dal Woong,Lee Eun Il,Oh Eun Ha,Kim Young Whan 한국환경보건학회 2006 한국환경보건학회지 Vol.32 No.1
This study was undertaken to determine the concentrations of 15 aldehydes in air samples collected from 21 households including 9 atopy patient's homes and to assess the extent of exposure and risk for an individual due to inhalation. Of all the aldehydes identified in both indoor and outdoor environment, formaldehyde and acetaldehyde were the most abundant aldehydes, which were occupied $60\%\;and\;17\%$ of total amount, respectively. The geometric mean concentration of formaldehyde and acetaldehyde in indoor air were $170.5\pm1.9\;{\mu}g/m^3\;and\;47.3\pm1.5\;{\mu}g/m^3$, respectively. There existed a strong correlation between formaldehyde, acetaldehyde and other aldehydes. And the ratio of indoor and outdoor concentrations (I/O) exceeded 1.0 for almost every measured aldehydes except m-tolualdehyde... No associations were found between the level of aldehydes and either housing characteristics or living habits in most of the samples with only a few exception. And the concentrations of all aldehydes indoor air between atopy patient's homes and control homes were not significant(p>0.05). Formaldehyde and acetaldehyde exposures and risks were estimated by using the inhalation unit risk, mean concentrations and the 95th percentiles, and which were $2.6\times10^{-3}\;and\;1.1\times10^{-4}$, respectively. The mean and the 95th percentile risk estimates were 25 times higher for formaldehyde than for acetaldehyde in homes.
알레르기 환자 가정에서 생물학적 유해인자에 대한 노출평가 -세균, 진균, 집먼지 진드기 알레르겐, 내독소를 대상으로
문경환,변상훈,최달웅,김영환,이장희,이은실,Moon Kyong Whan,Byeon Sang Hoon,Choi Dal Woong,Kim Young Whan,Lee Jang Hee,Lee Eun Il 한국환경보건학회 2005 한국환경보건학회지 Vol.31 No.2
To assess exposure of allergy patients to a biological environment, measurements were made of levels of airborne bacteria and fungi, house dust endotoxin and mite allergens in homes of 7 allergy patients and 12 healthy families. Concentrations of airborne total bacteria and the ratio of indoor and outdoor concentrations(I/O) in allergy patient's homes were high compared to non-allergy houses. But no significant differences could be shown for the concentration of spores of viable fungi and staphylococcus in indoor air between the homes of allergic patients and healthy families. The results of investigation on house dust mites, Dermatophagoids farinae were detected in all mattress samples and the levels in the allergy patient's homes were generally high, with individual measurements exceeding $2{\mu}g/g$ dust found in $30\%$ samples. In contrast with, Dermatophagoids pteronyssinus were detected in only $60\%$ samples and the concentrations were very low. The levels of endotoxin in dust samples collected from the allergy patient's home mattresses were higher than those of control houses. There was a positive correlation between the endotoxin levels and the house dust mite allergens.
박근태,문경환,김형태,박찬정,정호철,임영희,Park, Keun-Tae,Moon, Kyong-Whan,Kim, Hyung-Tae,Park, Chan-Jung,Jeong, Ho-Chul,Lim, Young-Hee 한국환경보건학회 2011 한국환경보건학회지 Vol.37 No.4
Objectives: Respiratory virus infections are the most common disease among all ages in all parts of the world and occur through airborne transmission. The purpose of this study was to detect and quantitate human respiratory viruses in residential environments. Methods: Air samples were collected from the residential space of apartments in the Seoul/Gyeonggi-do area. The samples were collected from indoor and outdoor air. Among respiratory viruses, influenza A virus, influenza B virus, parainfluenza virus, metapneumovirus, respiratory syncytial virus, and adenovirus were investigated by multiplex polymerase chain reaction. Among the virus-positive samples, we performed adenovirus quantification by real-time polymerase chain reaction. Results: Virus detection rates were 44.0%, 3.8%, 3.4%, and 17.3% in spring, summer, autumn, and winter, respectively. The virus detection rate was higher in winter and spring than in summer and autumn. Adenovirus was most commonly detected, followed by influenza A virus and parainfluenza virus. Virus distribution was not significantly different between indoor and outdoor environments. Conclusions: Although virus concentrations were not high in residential environments, residents in houses with detected viruses may have an increased risk of exposure to airborne respiratory viruses, especially in winter and spring.
허은혜,원동환,문경환,Huh, Eun-Hae,Won, Dong-Hwan,Moon, Kyong-Whan 한국환경보건학회 2012 한국환경보건학회지 Vol.38 No.4
Objectives: Indoor air quality problems in public spaces have recently become a very important issue in South Korea, because many spend a long time every day indoors. In this study, an extensive literature review was performed on the subject of suspended bacteria and fungi in public facilities. The objective of this study was to evaluate the extent and types of suspended bacteria and fungi in indoor air in South Korea. This study will provide direction to the research in the field of indoor air. Methods: Article reviews was conducted using a search engine and the following keywords; 'bacteria', 'total suspended bacteria', 'fungi' and 'indoor air' from published articles since 2000. Results: Most of the places of measurement were schools, kindergartens, childcare centers and general hospitals. The highest concentrations of total suspended bacteria and fungi were found in schools and kindergartens. Some public facilities exceeded the standard of 800 CFU/$m^3$. There were few studies on other suspended bacteria: Gram Negative Bacteria, Staphylococcus and Klebsiella pneumoniae. Conclusions: It appears that more studies with intensive controls are needed. It was found that schools and kindergartens were most susceptible to microbial indoor air pollution. These results may be able to suggest an indoor standard for suspended bacteria and fungi in South Korea.
곰팡이 센서(Fungal detector)를 이용한 알러지 환자 가정의 실내 환경 평가 - 사례연구
이준협,김영환,문경환,Lee, Jun-Hyup,Kim, Young-Hwan,Moon, Kyong-Whan 한국환경보건학회 2010 한국환경보건학회지 Vol.36 No.1
The indoor environmental condition was assessed in houses with allergy (asthma and atopy) patients by use of a fungal detector. The fungal index was calculated from the growth rate of the sensor fungi in a fungal detector encapsulating the spores, Alternaria alternata S-78, Eurotium herbariorum J-183 and Aspergillus penicillioides K-712. Fungal indices were higher in asthma patient's houses than in control houses and Eurotium herbariorum showed the highest growth response among the sensor fungi. Dust mites allergen, Der f1, was also significantly high in allergy patient's houses where fungal indices above 10 were detected. A correlation was observed between the fungal indices and dust mite allergen proliferations in examined houses. Therefore, the fungal index can be a useful tool as an indirect indication for detecting chronic dampness that brings both contaminations by fungi and dust mite.
아토피, 천식환자집 및 새집에서 실내공기 중 휘발성 유기용제 농도
변상훈(Sang Hoon Byeon),문경환(Kyong Whan Moon),최달웅(Dal Woong Choi),이은일(Eun Il Lee),오은하(Eun Ha Oh),김영환(Young Hwan Kim) 한국실내환경학회 2006 한국실내환경학회지 Vol.3 No.4
This study was undertaken to determine the concentrations of volatile organic compounds (VOCs) in the indoor air between houses of atopy, asthma patients and new houses. Total volatile organic compounds (TVOCs) in the indoor and outdoor air of normal houses were measured as 92.6 and 72.5 ㎍/㎥, respectively. TVOCs in the indoor and outdoor air of atopy patient"s houses were 152 and 42.1 ㎍/㎥. TVOCs in the indoor and outdoor air of asthma patient"s houses was 165 and 50.1 ㎍/㎥. TVOCs in the indoor and outdoor air of new houses was 158 and 78.3 ㎍/㎥. It was found that the concentrations of VOCs were higher in the indoor air of atopy, asthma patient"s and new houses than the normal houses. This suggests that the concentration of VOCs can influence atopy and asthma.
우리나라 대학과 보건대학원에서 환경·보건분야 관련학과의 특성변화
이진헌(Jin Heon Lee),문경환(Kyong Whan Moon),안령미(Ryong Me Ahn) 한국환경보건학회 2022 한국환경보건학회지 Vol.48 No.1
Background: Education on environmental health in Korea was begun with establishment of the Graduate School of Public Health at Seoul National University 1959. The sanitary movement started in Europe and the Americas in the 19th century and was introduced to Korea in the 1960s under the name of sanitary engineering. The field enlarged along with title changes. Objectives: The purpose of this study was to investigate the previous and present status of the environmental and public health fields in Korea. Methods: This study utilized documents published by the South Korean Ministry of Education and Korean Education Development Institute (KEDI) from 2015 to 2020, the homepages of universities with their history and regulations, and other related published documents. Results: Public health was fundamentally enlarged as an expert field in Korea with the establishment of the Graduate School of Public Health at Seoul National University in 1959. There are 102 departments relevant to the environmental field at two-year colleges, 220 at universities, and 175 at graduate schools. There are 89 departments relevant to the public health field at colleges, 96 at universities, and 160 at graduate schools as of 2020. The term “environment” in the title of a department is used as much as 80~93.1%, but “public health” in titles is used in 47.7~61.5%. Fifty percent of graduate schools of public health award specialty degrees other than master of public health. Conclusions: Although environment and public health fields have been expanded in universities in Korea, various specialty fields were included in university and graduate school. It is important to consider the coping plan with the trend.