지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2012.1
- 수록면
- 503 - 509 (7page)
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초록· 키워드
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Objectives: This study was performed in order to evaluate the generation characteristics of airborne bacteria and fungi while operating a household humidifier, in consideration of user habits. Methods: Microbial samples were collected in a closed chamber with a total volume of 2.76 ㎥, in which a humidifier was operated according to experimental strategies. A cultivation method based on the viable counts of mesophilic heterotrophic bacteria and fungi was performed. Experimental strategies were divided into three classes: the type of water in the water reservoir (tap water, cooled boiled water); the frequency of filling the reservoir (refill every day, no refill); and the sterilization method (sterilization function mode, humidifier disinfectants). Results: Significant increases in the concentration of airborne bacteria were observed while the humidifier was in operation. The concentration had increased to 2,407 $CFU/m^3$ by 120 hours when tap water filled the reservoir without any application of sterilization, while for cooled boiled water, it was merely 393 $CFU/m^3$ at a similar time point. Usages of disinfectant in the water tank were more effective in decreasing bioaerosol generation compared to sterilization function mode operation. Generation characteristics of airborne fungi were similar to those of bacteria, but the levels were not significant in all experiments. Calculated exposure factor can be used as an indicator to compare biorisk exposure. Conclusion: This study identified the potential for bioaerosol generation in indoor environments while operating a household humidifier. User practices were critical in the generation of bioaerosol, or more specifically, airborne bacteria. Proper usage of a humidifier ensures that any biorisks resulting from generated bioaerosol can be prevented.
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참고문헌 (13)
참고문헌 신청
ASHRAE / 1992 / Thermal Environmental Conditions for Human Occupancy / American Society of Heating, Refrigerating and Air Conditioning Engineers Standard 55
Bae NR / 2006 / The effect of education and providing of environmental parameter on residents' management of indoor environment / Yonsei University
Burge HA / 1995 / Bioaerosols, Boca Raton / CRC Press : 1 ~ 33
Cho SH / 1990 / A review of health effects of relative humidity in office building / Kor. J. of Occup. Med 2 (2) : 123 ~ 133
Daniel C / 2002 / Fungal spoilage of bottled mineral water / Int. J. Food Microbiol 72 (1- 2) : 73 ~ 76
Bae NR / 2006 / The effect of education and providing of environmental parameter on residents' management of indoor environment / Yonsei University
Burge HA / 1995 / Bioaerosols, Boca Raton / CRC Press : 1 ~ 33
Cho SH / 1990 / A review of health effects of relative humidity in office building / Kor. J. of Occup. Med 2 (2) : 123 ~ 133
Daniel C / 2002 / Fungal spoilage of bottled mineral water / Int. J. Food Microbiol 72 (1- 2) : 73 ~ 76
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