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http://dx.doi.org/10.5572/KOSAE.2007.23.6.752

Mass Prediction of Various Water Cluster Ions for an Accurate Measurement of Aerosol Particle Size Distribution  

Jung, Jong-Hwan (School of Environmental Engineering, Kumoh National Institue of Technology)
Lee, Hye-Moon (Department of Powder Materials, Korea Institute of Materials Science)
Song, Dong-Keun (Eco-Machinery Research Division, Korea Institute of Machinary & Materials)
Kim, Tae-Oh (School of Environmental Engineering, Kumoh National Institue of Technology)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.23, no.6, 2007 , pp. 752-759 More about this Journal
Abstract
For an accurate measurement of aerosol particle size distribution using a differential mobility analyser (DMA), a new calculation process, capable of predicting the masses for the various kinds of water cluster ions generated from a bipolar ionizer, was prepared by improving the previous process. The masses for the 5 kinds of positive and negative water cluster ions produced from a SMAC ionizer were predicted by the improved calculation process. The aerosol particle charging ratios calculated by applying the predicted ion masses to particle charging equations were in good accordance with the experimentally measured ones, indicating that the improved calculation process are more reasonable than the previous one in a mass prediction of bipolar water cluster ions.
Keywords
Water cluster ions; Ion electrical mobility; Ion mass; Particle charging ratio;
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