文章基本信息

标题：Development and Performance Evaluation of a Porous Tube Dilutor for Real-time Measurements of Fine Particles in High-humidity Environments
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作者：Chang Gyu Woo ; Ki-Jung Hong ; Hak-Joon Kim 等
期刊名称：Aerosol and Air Quality Research
印刷版ISSN：1680-8584
出版年度：2019
卷号：19
期号：3
页码：461-466
DOI：10.4209/aaqr.2018.08.0319
语种：English
出版社：Chinese Association for Aerosol Research in Taiwan
摘要：Real-time measurement of fine particles in stack emission gases is an important component in continuous environmental monitoring of PM10 and PM2.5. We developed a porous tube dilutor (using both hot and cold dilution) to measure fine, but not condensable, particles in highly humid gas emissions and compared our device to a commercial ejector-type dilutor. Particle size distributions were measured in emissions from a diesel engine and a coal-fired boiler. The porous tube dilutor successfully measured particles in accumulation mode, including relatively large particles over 3 µm in diameter (without nuclei), whereas the ejector dilutor detected some condensable particles but could not detect large particles. The porous tube dilutor successfully removed condensed water droplets generated by a humidifier in a 30-m3 chamber.
关键词：Sampling;PM10;PM2.5;Dilution;Condensable