MENG Xiangbiao, PENG Li, QIU Jian, LUO Kaiqing, YAO Zhen, HAN Peng

(School of Physics and Telecommunication Engineering, Guangdong Provincial Engineering Research Center for Optoelectronic Instrument, South China Normal University, Guangzhou 510006, China)

Abstract: This paper studies a new wet method for collecting PM2.5 particles in the air with water or droplets. Based on direct water washing method and atomized water washing method, wet collect device was designed and produced. The obtained PM2.5 sample solution was tested by dynamic light scattering technique to get the average photon number of the sample and the PM2.5 particle size to characterize the feasibility and reliability of the wet method. The experimental results show that the measured particle size ranges from 200 to 400 nm, the average photon number increases with the increase of experimental time. The wet method is feasible and reliable. Compared with the direct water washing method, the atomized water washing method can significantly improve the efficiency of wet method.

Keywords: wet method for collecting particles; water washing technology; atomized water washing technology; photon number; PM2.5 particles

文章编号：1008-5548(2020)02-0075-05

DOI:10.13732/j.issn.1008-5548.2020.02.012

中图分类号：X513                               文献标志码：A

收稿日期： 2019-10-14，修回日期：2019-11-26，在线出版时间：2019-12-30 14:50。

基金项目：国家自然科学基金项目，编号：61975058；广州市科技计划项目，编号：201707010485, 201704020137。

第一作者简介：孟祥彪(1994—)，男，硕士研究生，研究方向为光电技术及系统。E-mail：1163644872@qq.com。

通信作者简介：韩鹏(1976—)，男，博士，教授，博士生导师，研究方向为光电技术及系统。E-mail：hanpeng@m.scnu.edu.cn。