采暖季室内外细颗粒物关系的关键影响因素分析.pdf

北京大学学报(自然科学版) 第 52 卷 第 5 期 2016 年 9 月 Acta Scientiarum Naturalium Universitatis Pekinensis, Vol. 52, No. 5 (Sept. 2016) doi: 10.13209/j.0479-8023.2016.037 采暖季室内外细颗粒物关系的关键影响因素分析 吴亚涛 刘兆荣† 北京大学环境科学与工程学院 , 北京 100871; † 通信作者 , E-mail: zrliu@pku.edu.cn 摘要 于 2014 年 2—3 月和 11—12 月对室内外环境中细颗粒物进行采集和分析, 研究通风条件、大气污染 水平以及温、湿度等因素对细颗粒物室内外关系的影响。研究表明, 通风条件和大气污染水平是影响细颗粒 物室内外关系的重要因素, 对细颗粒物的 I/O 、室内外相关系数、细颗粒物的渗透因子以及大气细颗粒物对 室内的贡献率均有影响, 通风条件越好, I/O 越高, 室内外相关系数和室外贡献率也越大; 随着大气细颗粒物 浓度的升高 , 细颗粒物 I/O 比值有升高的趋势, 且其波动范围逐渐减小 , 室内外细颗粒物之间的相关性逐渐 增强, 室外贡献率逐渐增大, 但增速逐渐减缓。温、湿度均对细颗粒物室内外关系的影响较小。 关键词 室内外关系; 细颗粒物; 相关系数 ; I/O; 室外贡献率 中图分类号 X131 Key Factors Analysis of Indoor and Outdoor Fine Particulate Matter in Heating Season WU Yatao, LIU Zhaorong† College of Environmental Sciences and Engineering, Peking University; † Corresponding author, E-mail: zrliu@pku.edu.cn Abstract Indoor and outdoor fine particulate matter were sampled and analyzed in Feb.–Mar. and Nov. –Dec., 2014. The influence of ventilation condition, atmospheric pollution level, the temperature and humidity on relationship between the indoor and outdoor fine particulate matters were studied. Studies showed that ventilation and air pollution levels were two important factors affecting the indoor and outdoor relations of PM2.5 , they both had effects on I/O ratio, correlation coefficient of indoor and outdoor particles as well as the contribution rate of