Journal of Guangdong University of Technology ›› 2020, Vol. 37 ›› Issue (05): 94-99.doi: 10.12052/gdutxb.190131

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Measurement and Analysis of Purifying Effect of Negative Ion on Indoor Fine Particulate Matter

Wang Jun-teng, Li Zhi-sheng, Liang Xi-guan, Li Hua-gang, Ou Yao-chun   

  1. School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China
  • Received:2019-10-31 Online:2020-09-17 Published:2020-09-17

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Abstract: Air negative ions reduce the concentration of fine particulate matter in the air mainly by electrostatic adsorption, and the particle size of the fine particulate matter will have an impact on the purification effect. In order to study the purification effect of negative ions on indoor particles with different particle sizes, a typical residential room in Guangzhou is taken as an example, by adding artificial pollution sources and anion purifier, to measure with corresponding instruments the concentration changes of particles with different particle sizes. And the linear fitting of the change of particle concentration with different particle size is carried out. The results show that the concentration changes of particles with different particle sizes are approximately linear, and the purification effect of anions on particles with small particle sizes is more obvious, while the survival time of anions in polluted air is very short and the concentration very small.

Key words: fine particulate matter, particle size distribution, negative ions, concentrations change, purification efficiency, regression equation

CLC Number: 

  • TU834
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