휴대용 광이온화 검출기의 정확도, 정밀도 및 기기간 차이에 대한 실험실 평가Laboratory Evaluation of the Accuracy, Precision, and Inter-instrumental Variance of a Portable Photoionization Detector
- Other Titles
- Laboratory Evaluation of the Accuracy, Precision, and Inter-instrumental Variance of a Portable Photoionization Detector
- Authors
- 최동민; 최영은; 윤충식; 이광원; 이윤근; 이익모; 박정임
- Issue Date
- 2012
- Publisher
- 한국산업보건학회
- Keywords
- Portable Photoionization Detector; Evaluation; Accuracy; Calibration
- Citation
- 한국산업보건학회지, v.22, no.3, pp.200 - 208
- Journal Title
- 한국산업보건학회지
- Volume
- 22
- Number
- 3
- Start Page
- 200
- End Page
- 208
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/15621
- ISSN
- 2384-132x
- Abstract
- Objectives: This study investigated the performance of three separate units of a portable photoionization detector (PID,ppb-RAE 3000) for measuring volatile organic compounds (VOCs) in a laboratory.
Methods: A laboratory evaluation of the accuracy, precision, and inter-instrumental variance of three separate units of a portable PID (ppb-RAE 3000) was performed. The evaluation was based on the preparation of a test air sample of known toluene or ethylacetate concentration in a Tedlar® bag. The test air sample was monitored and data were logged consecutively by the three PIDs. A certified gas of 50 ppm toluene was also monitored during the test to ensure the reliability of the generated test air sample. Four different concentrations ranging from 0.1 to 2 TLV were used and a series of five measurements for each concentration level was performed. The accuracy was evaluated using National Institute for Occupational Safety and Health (NIOSH) criteria.
results: The results from the oldest ppb-RAE3000 unit among the three test units generally fell outside the NIOSH recommended accuracy criteria of ±25%, whereas the other two units produced results which were acceptable at, or greater than, 25 ppm of toluene, or 0.5 TLV. These units also met the NIOSH criteria for some ethylacetate measurements but the results were not consistent.
conclusions: Considering the inconsistent performance of these ppb-RAE 3000 units, this device may not be appropriate for use as an alternative to the standard measurement methods. However, it can serve good survey instruments to identify exposure sources or concentration profiles. For all applications, the ppb-RAE 3000 should be used with frequent calibration checks, additional validation using a reference material, and careful maintenance.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Natural Sciences > Department of Environmental Health Science > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/15621)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.