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KMID : 1156220070330020145
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Journal of Environmental Health Sciences
2007 Volume.33 No. 2 p.145 ~ p.149
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Evaluation of Impactor’s Collection Efficiency on Airborne Bacteria by Type of Agar Media and Storage Condition
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Kim Ki-Yion
Kim Chi-Nyon
Lee Kyung-Jong
Park Jae-Bum
Jang Kyu-Yeob
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Abstract
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The range of reduction rates of airborne bacteria concentration at 6 hrs, 12 hrs, 24 hrs and 48 hrs, which means a storage time until input of agar media into incubator after air sampling with an impactor, were 15-20%, 25-40%, 35-50% and 55-70%, respectively, compared to initial concentration. Types of agar media and storage thermal condition did not significantly affect a collection efficiency of impactor in terms of evaluating airborne bacteria level (p＞0.05). To better improve the impactor’s collection efficiency of airborne bacteria, based on the result of this study, it is recommended that the vicinity of 25℃ should be sustained until input of agar media into incubator after air sampling.
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KEYWORD
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impactor, airborne bacteria, collection efficiency, storage condition
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