住宅室内外环境中PM2.5的污染特征及相关性研究  

Study on Pollution Characteristics and Correlation of PM_(2.5) in Indoor and Outdoor Residential Environments

作　　者：张金萍 赵文君 王玉欢 卢冠舟 

机构地区：[1]北京市“供热、供燃气、通风及空调工程”重点实验室,北京100044 [2]北京建筑大学环境与能源工程学院,北京100044

出　　处：《建筑科学》2017年第8期9-16,共8页Building Science

基　　金：国家自然科学基金项目“室内香烛燃烧产生的多环芳烃的散发特征、分配规律及暴露风险”(51378043)

摘　　要：于2015年4月~12月分别对北京市不同地点6所住宅的室内外PM_(2.5)的浓度进行了同步测试,并通过样本检验及线性回归模型分析方法,研究了住宅室内外环境中PM_(2.5)的污染特征及相关性。结果表明:1)6所住宅室内外PM_(2.5)浓度在时间序列上呈非均匀分布,经T检验显示差异性显著。2)不同住宅室内外PM_(2.5)的浓度比即I/O的平均值在0.674~2.673之间变化,测试时段内开窗情况下室内有污染源的住宅的I/O平均值大于1,关窗下室内无污染源的住宅的I/O平均值小于1。3)正常天气和雾霾天气下室内无污染源时,室内外PM_(2.5)的线性相关性较好。室内有污染源,室内外PM_(2.5)的Pearson相关系数出现负值,室内外PM_(2.5)的线性相关性较差。From April to December 2015,synchronous measurements were conducted on the indoor and outdoor concentrations of PM_（2.5）respectively in six residences located at different sites in Beijing. The pollution characteristics and correlation of PM_（2.5）in the indoor and outdoor environments were studied through sample test and linear regression model. The results showed that： 1） Indoor and outdoor concentrations of PM_（2.5）in six residences were in non-uniform distribution in time sequence,and a significant difference is showed between them by T test.2） The PM_（2.5）concentration ratio of indoor and outdoor environments in different residences i. e. the I/O varied between 0. 674 ~ 2. 673 on average. The average I/O in the houses with indoor pollution sources was greater than 1 with the windows opened,and the average I/O in the houses without indoor pollution sources was less than 1 with the windows closed. 3） There was a better correlation between the indoor and outdoor PM_（2.5）concentrations in the houses without the obvious pollution sources in both normal and haze weather. The Pearson correlation coefficient between indoor and outdoor PM_（2.5）was -0. 236 in the houses with pollution sources and there was a poor linear correlation between indoor and outdoor PM_（2.5）.

关 键 词：住宅 PM2.5 污染特征 I/O值 相关性 排放强度 

分 类 号：TU834.2[建筑科学—供热、供燃气、通风及空调工程]