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다중이용시설 내부에 분포하는 부유 진균의 입경별 농도 특성
박재범,김기연,장규엽,김치년,이경종,Park, Jae-Beom,Kim, Ki-Youn,Jang, Gyu-Yeob,Kim, Chin-Yon,Lee, Kyung-Jong 한국환경보건학회 2006 한국환경보건학회지 Vol.32 No.1
The aim of this study is to examine size-based concentration and genera of airborne fungi distributed in public facilities such as hospital, kindergarten, day-care center and postpartum nurse center and to provide fundamental data in order to prevent respiratory diseases caused by exposure to airborne fungi. Culturable total and respirable concentrations of airborne fungi averaged to $382\;cfu/m^3\;and\;292\;cfu/m^3$ in hospital, $536\;cfu/m^3\;and\;347\;cfu/m^3$ in kindergarten, $334\;cfu/m^3\;and\;266\;cfu/m^3$ in day-care center, and $371\;cfu/m^3\;and\;289\;cfu/m^3$ in postpartum nurse center, respectively. The ratio of respirable to total concentration of airborne fungi in the investigated public facilities was ranged from $55\%\;to\;70\%$ but there was no significant difference among them (p>0.05). The mean I/O ratio of culturable total and respirable concentrations were 0.56 and 0.64 in hospital, 0.72 and 0.91 in kindergarten, 0.33 and 0.45 in day-care center, and 0.63 and 0.73 in postpartum nurse center, respectively. Indoor concentration of airborne fungi did not correlated significantly with indoor temperature and relative humidity (p>0.05) but had a significant positive correlation with $CO_2$ concentration (p<0.01) and surrounding condition (p<0.05). Penicillium spp., Cladosporium spp., and Aspergillus spp. were estimated to over $95\%$ of total airborne fungi identified in the investigated public facilities.
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규제대상 다중이용시설내 부유세균의 분포 특성에 관한 현장 조사
김기연 ( Ki Youn Kim ),장규엽 ( Gyu Yeob Jang ),박재범 ( Jae Beom Park ),김치년 ( Chi Nyon Kim ),이경종 ( Kyung Jong Lee ) 한국산업위생학회 2006 한국산업보건학회지 Vol.16 No.1
Concentration and identification of airborne bacteria in the regulated public facilities were examined with the six-stage cascade impactor. Geometric mean total and respirable concentrations of airborne bacteria were 404 cfu/m3 and 194 cfu/m3 in hospital, 931 cfu/m3 and 358 cfu/m3 in kindergarten, 294 cfu/m3 and 134 cfu/m3 in day-care center, and 586 cfu/m3 and 254 cfu/m3 in postpartum nurse center, respectively. As a result, culturable total and respirable concentrations of airborne bacteria were significantly highest in kindergarten and lowest in day-care center (p<0.05). The ratio of respirable to total concentration of airborne bacteria in the investigated public facilities was ranged from 30% to 40% but there was no significant difference among them (p>0.05). The mean I/O ratio of culturable total and respirable concentrations were 0.58 and 0.66 in hospital, 0.71 and 0.83 in kindergarten, 0.28 and 0.41 in day-care center, and 0.63 and 0.78 in postpartum nurse center, respectively. Day-care center showed the lowest I/O ratio of culturable total and respirable concentration of airborne bacteria (p<0.05) but a significant difference was not found among other facilities. Indoor concentration of airborne bacteria did not correlated significantly with indoor temperature and relative humidity (p>0.05) but had a significant positive correlation with CO2 and surrounding condition (p<0.05). Staphylococcus spp., Micrococcus spp., Corynebacterium spp., and Bacillus spp. were dominant genera and amounted to over 95% of total airborne bacteria identified in the investigated public facilities. Size distributions of four dominant genera did not observed inconsistently regardless of type of public facility.
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