一种新型大气细颗粒物湿法捕集装置  

A New Type of Wet Capture Device for Atmospheric Fine Particulate Matter

作　　者：林镇鹏 朱明慧 叶晓欣 陈嘉珍 李建洲 彭力[1,2] LIN Zhenpeng;ZHU Minghui;YE Xiaoxin;CHEN Jiazhen;LI Jianzhou;PENG Li(School of Physics and Telecommunication Engineering,South China Normal University,Guangzhou 510006,China;SCNU Qingyuan Institute of Science and Technology Innovation Co.Ltd.,Qingyuan 511517,China)

机构地区：[1]华南师范大学物理与电信工程学院,广东广州510006 [2]华南师大(清远)科技创新研究院有限公司,广东清远511517

出　　处：《大学物理实验》2023年第4期57-61,共5页Physical Experiment of College

基　　金：国家自然科学基金(61975058)。

摘　　要：对环境空气中的颗粒进行捕获,是大气颗粒物污染防治工作的基础。基于湿法捕集理论,设计并搭建了一套新型大气细颗粒物湿法捕集装置。利用该装置对大气颗粒物进行现场采样实验,用动态光散射技术对获取的颗粒物样品溶液进行测试,通过样品溶液的散射光光子数来表征样品的浓度。实验结果表明,此装置能对大气细颗粒物样品实现有效的捕获,捕集效率随转子转速的增大而增大,随着液体流速增大呈先增大后减小的趋势,并且在液体流速为600 mL/min时,装置捕集性能达到峰值。The capture of particles in the ambient air is the basis for the prevention and control of atmospheric particulate pollution.Based on the theory of wet trapping,a new set of wet trapping devices for atmospheric fine particulate matter is designed and built.The device is used to conduct on-site sampling experiments on atmospheric particles,and the obtained particle sample solution is tested by dynamic light scattering technology.The concentration of the sample is characterized by the number of scattered light photons of the sample solution.The experimental results show that the device built can effectively capture atmospheric fine particle samples.The capture efficiency increases with the increase of rotor speed,and firstly increases and then decreases with the increase of liquid flow rate.When the liquid flow rate is 600 mL/min,the device has the best capture performance.

关 键 词：大气细颗粒物 湿法捕集装置 散射光光子数 

分 类 号：X513[环境科学与工程—环境工程]