Journal of Korean Society of Occupational and Environmental Hygiene (한국산업보건학회지)

Korean Industrial Hygiene Association (한국산업보건학회)
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Fit Performance Comparison Between OPC and CNC Based on Number of Ambient Aerosol Particles

시험환경 내 입자수에 대한 OPC, CNC 장비 간 마스크 밀착 성능비교

  • Seo, Hyekyung (College of Biomedical Laboratory Science, Shinhan University) ;
  • Jang, Hoyeong (College of Biomedical Laboratory Science, Shinhan University) ;
  • Shim, Sua (College of Biomedical Laboratory Science, Shinhan University) ;
  • Kim, Huiju (College of Biomedical Laboratory Science, Shinhan University) ;
  • Han, Donhee (Department of Occupational Health and Safety Engineering, Inje University)
  • 서혜경 (신한대학교 바이오 생태보건대학) ;
  • 장호영 (신한대학교 바이오 생태보건대학) ;
  • 심수아 (신한대학교 바이오 생태보건대학) ;
  • 김희주 (신한대학교 바이오 생태보건대학) ;
  • 한돈희 (인제대학교 보건안전공학과)
  • Received : 2022.05.16
  • Accepted : 2022.06.17
  • Published : 2022.06.30
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Abstract

Objectives: Fit performance may vary depending on the ambient aerosol number and ratio in respective test environment. Although several instrument can measure it, they differ with respect to the measurement principle and the range of ambient aerosols collected to calculate the fit factor. Methods: In this study, the fit performance between a condensation nuclei counter(CNC) and an optical particle counter(OPC) was compared according to ambient aerosol number concentration, and evaluated consistency. One type respirators(N95 masks) was worn by 50 participants PortaCount®(Pro+ 8038) and MT®(05U) were connected with one probe to one mask, and Fit Factors(FFs) were measured simultaneously. Results: The interclass correlation coefficient of the fit factor and ambient aerosol number, as measured by the two instrument, was 0.82 and 0.79, respectively, indicating a high consistency level. On the other hand there was a significant correlation between the successful test performance of the OPC instrument and the ambient aerosol number. Conclusions: The test was passed with the CNC and OPC instruments when the ambient aerosol number was 635-3,332 particles/cm3 and 368-1,976 particles/cm3, respectively. Thus, the ideal ambient aerosol number of particles differed between the two instrument.

Keywords

Acknowledgement

이 연구는 (사)한국호흡보호구학회 기초연구 활동으로 수행하였으며 연구비 지원 기관인 (주)태원시바타에 감사드립니다. 또한 입자발생 환경 구축을 위한 실험에 도움을 준 (주)에이피엠엔지니어링 나상철 과장님과 통계자문에 협조해 준 (국)한국한의학연구소 강병갑 박사님께 감사드립니다.

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