大中型商场PM10、PM2.5污染水平与来源分析

利用便携式气溶胶监测仪,对平顶山市区的中原商场、商业大楼、食品城总店三家大型商场不同楼层空气PM10和PM2.5进行了现场测定。结果显示,平顶山市大中型商场可吸入颗粒物污染严重,PM10、PM2.5污染平均超标率分别为13.7%和48.0%;PM10、PM2.5的质量浓度在时间和空间分布上存在很大差异;PM10中PM2.5所占比例为83%。

Pollution Level and Source Analysis of PM10 and PM2.5 in Large and Medium Sized Shopping Centre

In order to analyze the pollution level of PM_(10) and PM_(2.5),as well as their sources in large and medium sized shopping centre.Using the portable aerosol monitor,the PM_(10) and PM_(2.5) were detected on different floors in Zhongyuan Supermarket,Commerce Building and Foodstuff Centre in Pingdingshan City area.The pollution level of the particle matter is very serious in the large and medium sized shopping centre in Pingdingshan City.The average rate of excess standard of PM_(10)and PM_(2.5)was 13.7% and 48% respectively.The concentration of PM_(10)and PM_(2.5) is highly different in different spaces and times.The PM_(2.5) fraction accounts approximately 83% of the PM_(10).The pollution sources of the particle matter exist badly in large and medium sized shopping centre in Pingdingshan City.The ratio of PM_(2.5)in PM_(10) in indoor of shopping centre is higher than that in the outdoor atmospheric environment.