北京PM2.5数据分析处理

Data Analysis and Processing of PM2.5 in Beijing

PM2.5是地球大气成分中含量很少的组分,但它对空气质量和能见度等有重要的影响。与较粗的大气颗粒物相比,PM2.5粒径小,面积大,活性强,易附带有毒、有害物质(例如,重金属、微生物等),且在大气中的停留时间长、输送距离远,因而对人体健康和大气环境质量的影响更大。因此,通过对PM2.5浓度的分析处理,能够作为判定空气污染程度的一个重要指标,从而能够为雾霾的防治起到参考作用。

Pm2.5 is a small component of the earth ＇s atmospheric composition, but it has an important impact on air quality and visibility. Compared with the coarser atmospheric particles, PM2.5 has small particle size, large area, strong activity, easy to attach toxic and harmful substances （ e.g., heavy metals, microorganisms, etc. ）, long residence time in the atmosphere and long transportation distance, thus having a greater impact on human health and atmospheric environment quality. Therefore, the analysis and treatment of PM2.5 concentration can be used as an important index to determine the degree of air pollution, and can play a reference role for the prevention and control of haze.