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

서혜경; 장호영; 심수아; 김희주; 한돈희

doi:10.15269/jksoeh.2022.32.2.163

시험환경 내 입자수에 대한 OPC, CNC 장비 간 마스크 밀착 성능비교
Fit Performance Comparison Between OPC and CNC Based on Number of Ambient Aerosol Particles 원문보기

한국산업보건학회지 = Journal of Korean Society of Occupational and Environmental Hygiene, v.32 no.2, 2022년, pp.163 - 171

서혜경 (신한대학교 바이오 생태보건대학) , 장호영 (신한대학교 바이오 생태보건대학) , 심수아 (신한대학교 바이오 생태보건대학) , 김희주 (신한대학교 바이오 생태보건대학) , 한돈희 (인제대학교 보건안전공학과)

Abstract ▼ AI-Helper

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.

주제어

표/그림 (10)

그림 Figure 1. Experimental setup of (a) Y nozzle connector (b) OPC instrument (c) CNC instrument (d) Particle generator (e) N95 mask
그림 Figure 2. Size distribution of generated particles
표 Table 2. Comparison of two instruments
표 Table 1. General characteristics of study participants
그림 Figure 3. Concordance rate of the two instruments
표 Table 3. Correlation between fit factor and ambient aerosol number
표 Table 4. Comparison of CNC and OPC based on ambient aerosol
그림 Figure 4. Rank order of fit factors : (a) Fit test passed, and (b) failed
그림 Figure 5. Rank order of ambient aerosol in : (a) passed, (b) failed Fit test
그림 Figure 6. Radar chart of fit performance of the two instruments

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