北京市海淀区公共场所空气清洁度在线监测结果分析

Analysis of online monitoring results of air cleanness degree in public places in Haidian district of Beijing

目的分析北京市海淀区公共场所空气清洁度的特点及变化趋势。方法收集2011～2012年北京市海淀区公共场所空气质量在线监测系统采集的数据，计算采集数据的小时均值，并整理成新的数据库进行统计分析，依据不同季节、时间对不同种类公共场所的监测数据进行均数比较和CO2超标率比较。结论北京市海淀区公共场所空气清洁度总体水平较好，但是图书馆、电影院和医院的CO2浓度在部分时间段仍较高。

Objective To analyze the characteristics and changing tendency of air cleanness degree in public places in Haidian district of Beijing. Methods The data of air quality monitoring system in public places in Haidian district of Beijing from 2011 to 2012 were collected. The means of hours were collected to form a new database. The monitoring data of different public places were compared for mean and over standard rate of CO2 based on different seasons and time. Conclusion The overall level of air cleanness degree in public places in Haidian district of Beijing was appreciate, but the concentrations of CO2 were still high some times in library, cinema and hospital.