Evaluation of Impactor's Collection Efficiency on Airborne Bacteria by Type of Agar Media and Storage Condition

배지 종류 및 저장 조건에 따른 impactor의 부유세균 시료 채취 효율 평가

  • Kim, Ki-Youn (Center for Health Related Aerosol Studies, Department of Environmental Health, University of Cincinnati) ;
  • Jang, Gyu-Yeob (Department of Preventive Medicine & Public Health, School of Medicine, Ajou University) ;
  • Park, Jae-Beom (Department of Preventive Medicine & Public Health, School of Medicine, Ajou University) ;
  • Kim, Chi-Nyon (Institute for Occupational Health, College of Medicine, Yonsei University) ;
  • Lee, Kyung-Jong (Department of Preventive Medicine & Public Health, School of Medicine, Ajou University)
  • 김기연 (신시내티대학교 환경보건학과) ;
  • 장규엽 (아주대학교 의과대학 예방의학교실) ;
  • 박재범 (아주대학교 의과대학 예방의학교실) ;
  • 김치년 (연세대학교 의과대학 산업보건연구소) ;
  • 이경종 (아주대학교 의과대학 예방의학교실)
  • Published : 2007.04.30


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 $25^{\circ}C$ should be sustained until input of agar media into incubator after air sampling.


impactor;airborne bacteria;collection efficiency;storage condition


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