中国北方地区冬季大气颗粒物浓度在线监测方法研究

Online Monitoring of Atmospheric Particulate Matter Concentration in Winter of Northern China

为了实现大气颗粒物浓度在线监测,提出一种北方地区冬季大气颗粒物浓度在线监测方法。通过米散射理论和辐射传输理论对北方地区冬季大气中的颗粒物物理特性和散射等相关特性进行分析,构建激光多重散射和吸收理论模型,利用模型对大气颗粒物尺寸分布参数和密度等不同参数之间的关联性进行分析,同时引入激光差分探测技术,完成大气颗粒物浓度在线监测。选取北方地区典型的H城市作为研究对象,分析该城市大气颗粒物的变化情况,同时制定对应的环保防护措施。

In order to realize the online monitoring of atmospheric particulate matter concentration,an online monitoring method of atmospheric particulate matter concentration in winter of northern China was proposed.Based on the meter scattering theory and radiative transfer theory,this paper analyzed the physical characteristics and scattering and other related characteristics of particulate matter in the atmosphere in winter in northern China,constructed the theoretical model of laser multiple scattering and absorption,used the model to analyze the correlation between different parameters such as size distribution parameters and density of atmospheric particulate matter.It introduced the laser differential detection technology to monitor atmospheric particulate matter concentration online.A typical City H in northern China was selected as the research object to analyze the changes of atmospheric particulate matter,and to formulate corresponding environmental protection measures.