碩士 / 臺灣大學 / 職業醫學與工業衛生研究所 / 98 / In order to match the ISO/CEN/ACGIH respirable sampling criteria, applying porous polyurethane foam (PUF) to impactors on particle aerodynamic size fractioning has been studied. However, one of the inherent problems of impactors is particle bounce off the collecting plates, even though a foam substrate was applied. There is no study to examine the effect of porosity of foam on fractioning and loading property. The objective of this study is to optimize a respirable aerosol sampler with foam and identifying the foam’s effects on sampling efficiency.
Using PUF with a diameter of 3 mm at a flow rate of 1.8 lpm was demonstrated to meet the ISO/CEN/ACGIH respirable sampling criteria well in this study. Results also showed that particle bounce can be minimized by applying PUF as collecting substrate. However, this impactor is not suitable applying for large diameter aerosol environments because of its available time is about 15 mins.
| Identifer | oai:union.ndltd.org:TW/098NTU05539004 |
| Date | January 2010 |
| Creators | Chao-Chun Chan, 詹朝竣 |
| Contributors | Chih-Chieh Chen, 陳志傑 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 65 |
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