摘要
为研究严寒地区供暖季室内外PM2.5浓度的垂直分布,在供暖季分别对长春某高层居住建筑1、8、15、24、33楼层的室内外PM2.5浓度进行监测,研究不同楼层室内外PM2.5的浓度与变化特征.采用随机组分重叠模型(RCS)方法研究各楼层PM2.5渗透因子,采用逐步回归分析方法研究室内PM2.5浓度的各影响因素.结果表明:在供暖季,长春市高层建筑的不同楼层均存在一定的PM2.5污染,室内外PM2.5浓度随楼层升高大体呈现减小的趋势,但差异不显著.室内外PM2.5浓度存在显著的相关性(P<0.05),在没有室内污染源时,室外颗粒物渗透是室内污染的主要来源.室内PM2.5浓度与房间面积等没有显著相关性.
In order to study the vertical distribution of indoor and outdoor PM2.5 concentration in cold area during heating season,the indoor and outdoor PM2.5 concentrations of 1,8,15,24 and 33 floors of a high-rise residential building in Changchun were monitored during heating season.The mass concentration and variation characteristics of indoor and outdoor PM2.5 in different floors were studied.Random component overlapping model(RCS)was used to study the permeability factors of PM2.5 in each floor,and stepwise regression analysis was used to study the influencing factors of indoor PM2.5 concentration.The results showed that serious PM2.5 pollution existed in different floors of high-rise buildings in Changchun during heating season,and the indoor and outdoor PM2.5 concentration decreased with the rise of floors,but the difference was not significant.There was a significant correlation between indoor and outdoor PM2.5 concentration(P<0.05).When there was no indoor pollution source,outdoor particulate matter infiltration was the main indoor source.Indoor PM2.5 concentration had no significant correlation with room area and other factors.
作者
白莉
贺梓健
陈琬玥
BAI Li;HE Zijian;CHEN Wanyue(School of Municipal and Environmental Engineering,Jilin Jianzhu University,Changchun Jilin 130118;Key Laboratory of Songliao Aquatic Environment,Ministry of Education,Jilin Jianzhu University,Changchun Jilin 130118)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2020年第4期477-481,513,共6页
Environmental Pollution & Control
基金
国家重点研发计划项目(No.2017YFC0702700)。
