Journal of Atmospheric and Environmental Optics ›› 2020, Vol. 15 ›› Issue (6): 413-428.

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Research Progress of On-Line Monitoring Technology for Ultrafine Particulate Matter Emitted by Motor Vehicles #br#

KANG Shipeng1;2;4, YU Tongzhu1;4∗, GUI Huaqiao1;2;4∗, YUAN Yongxing1;2;4, WANG Huanqin2;3, LIU Jianguo1;2;4   

  1. 1 Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; 2 Science Island Branch of Graduate School, University of Science and Technology of China , Hefei 230031, China; 3 Institute of Intelligent Machines, HFIPS, Chinese Academy of Sciences, Hefei 230031, China; 4 Key Laboratory of Optical Monitoring Technology for Environment, Anhui Province, Hefei 230031, China
  • Received:2020-08-27 Revised:2020-09-16 Online:2020-11-28 Published:2020-12-10

Abstract: Ultra-fine particles emitted by motor vehicles which have high number concentration and surface area, are one of the main sources of air pollution, . Accurate on-line monitoring is of significance for vehicle emission assessment and control measures. With the addition of particle number (PN) control index in vehicle emission standards in EU and China, the requirements of on-line monitoring technology are also increasing. At present, diffusion charging method and condensation nuclear particle count method are mainly used to measure the number of ultra-fine particles emitted by motor vehicles, and aerodynamics and electro-migration classification methods are mainly used to measure the particle size distribution. The research status of on-line monitoring technology of ultra-fine particles emitted by motor vehicles at home and abroad is summarized, the principle, characteristics and application status of several main developed measurement technologies and instruments are mainly introduced, and the future development of the technologies is prospected.


Key words: motor vehicles, ultrafine particles, on-line measurement, number concentration, particle size spectrum

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