大气细粒子(PM2.5)的污染对人和生态环境等影响巨大，迫切需要进行PM2.5质量浓度的监测；本文介绍了PM2.5国内外监测研究进展、监测网络应用情况以及监测技术；重点介绍了几种先进的技术：β射线法、振荡天平法和光散射法，并详细描述了各种监测设备的原理及结构，提出最好采用PM2.5在线监测仪进行日常监测.% The pol ution of particulate matter in ambient air makes an impact on the people and the eco-environment and the urgent things is to monitor the concentration of PM2.5 in air;This paper introduces the development of PM2.5 study at home and abroad, monitoring PM2.5, monitoring network application situation and monitoring technology. The paper introduces some advanced technology:beta ray method, oscil ation balance method and light scattering method, and describes the principle of various kinds of main characteristics and structure, and puts forward the best PM2.5 daily monitoring instrument online.
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