Possible Sampling Artifact in Real Time Particle Size Distributions Related to Sampling Rate |
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| Authors: | Xiaohong Yao Chak K Chan Ngai Ting Lau P S Lau Ming Fang |
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| Affiliation: | 1. Institute for the Environment, The Hong Kong University of Science and Technology , Clear Water Bay, Hong Kong, PRC;2. Department of Chemical Engineering , The Hong Kong University of Science and Technology , Clear Water Bay, Hong Kong, PRC |
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| Abstract: | The availability of high time-resolution (1 s full spectrum scan) particle sizers permitted atmospheric researchers to scrutinize the characteristics of ultrafine particles in rapidly varying (perhaps, random) high concentration environments such as roadside, on-road, and tunnels. These data also revealed possible artifacts associated with the slower (～ 30 s or more) scanning sizers when used in this kind of environment. This study discusses sampling rate artifact problems based on simulations using 1 s Engine Exhaust Particle Sizer data taken on a mobile platform. |
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