Laboratory and Field Tests of a Novel Three-Stage Personal Dust Sampler for Sampling Three Dust Fractions Simultaneously
| Autor: | Tung Sheng Shih, Sheng Chieh Chen, Chuen Jinn Tsai, A. A. Onischuk, David Y.H. Pui, Shou Nan Li, Penny Chen, V. V. Karasev, Cheng Sheng Chang |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Aerosol Science and Technology. 42:86-95 |
| ISSN: | 1521-7388 0278-6826 |
| DOI: | 10.1080/02786820701697556 |
| Popis: | This study designed and calibrated a novel three-stage personal dust sampler for sampling inhalable, thoracic, and respirable dust fractions simultaneously. The sampler has an annular inlet as the first stage for inhalable dust sampling, two impactors in the second and third stages to classify thoracic and respirable dusts, respectively, and a final filter. Laboratory calibration tests using monodisperse liquid and solid particles showed that with 100 ppi (pores per inch) PUF (porous polyurethane foam) substrates and at the flow rate of 3.2 L/min, the sampling efficiency curves of both impactor stages matched with the ISO/CEN/ACGIH thoracic and respirable sampling criteria, respectively. The sampler also agreed with the inhalable criterion for particles smaller than 17 μ m while the deviation increases with increasing particle diameter with a maximum of 28% for 27 μ m particles. It was also found that collection efficiency curve for solid particles was similar to that of liquid particles, indicating that ... |
| Databáze: | OpenAIRE |
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