Design Considerations and Performance Evaluation of a Compact Aerosol Particle Mass Analyzer |
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| Authors: | Naoko Tajima Hiromu Sakurai Nobuhiko Fukushima Kensei Ehara |
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| Affiliation: | 1. Kanomax Japan Inc. , Suita , Osaka , Japan;2. National Institute of Advanced Industrial Science and Technology , Tsukuba , Ibaraki , Japan |
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| Abstract: | A compact aerosol particle mass analyzer (APM) of which the size of the classifier was significantly reduced than that of the first commercial model (Kanomax Model 3600) was developed. Firstly, requirements for desired performance in classifying particle mass were set forth. Secondly, a theoretical framework for the design parameters of an APM that satisfies the requirements was formulated. Thirdly, the design parameters were determined that satisfies the requirements while reducing the instrument size. The requirements include the condition that the classification range covers from 0.001 to 1000 fg (approximately 12 to 1200 nm in size for spherical particles having the density of 1 g/cm3), and the condition that both the classification resolution and particle penetration in this mass range are higher than certain specified values. A prototype having the design parameters determined according to this theoretical framework was constructed, and its performance was evaluated experimentally. The external dimensions of the electrodes of the compact APM are approximately 140 mm in length and 60 mm in diameter. It was confirmed that the performance of the compact APM operated at the aerosol flow rate of 0.3 L/min was comparable to that of the Model 3600 APM operated at 1 L/min. Because of the reduced size and of the resultant improved portability, it is expected that the compact APM is readily applicable to field measurements. Copyright 2013 American Association for Aerosol Research |
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