北京地铁站台PM2.5实测及分析

Measurement and Analysis of PM2.5 on Beijing Metro Platform

随着地铁普及,地铁站内空气品质受到人们重视。PM2.5浓度是空气品质的重要衡量指标,地铁站内PM2.5浓度值实测研究有限。为了找到影响地铁站内PM2.5浓度的直接影响因素,实测北京地铁各站站台、屏蔽门、室外的PM2.5浓度值。通过对实测数据统计分析,站台内PM2.5浓度受到室外环境影响;不同类型屏蔽门对站台PM2.5浓度值也会造成影响。通过对连续实测数据的相关性分析,发现站台PM2.5存在积累情况。

With the popularity of subways,the air quality in subway stations has been valued.PM2.5 concentration is an important measure of air quality,and research on PM2.5 in subway stations is limited.In order to find the direct factors that affected the PM2.5 concentration in subway stations,the PM2.5 concentration values at the platforms,shielding doors,and outdoor areas of Beijing subway stations were measured.Through statistical analysis of the measured data,PM2.5 concentration inside the platform is affected by outdoor PM2.5;different types of shielded doors also affect the PM2.5 concentration of the platform.Through the correlation analysis of continuously measured data,it was found that there was accumulation of PM2.5 on the station.