南京某高校学生宿舍空气污染物浓度及室内外差异特征研究
Characteristics of Indoor Air Pollutant Concentrations and Indoor-Outdoor Differences at a University Dormitory in Nanjing
张添桢 1陈培林 1王勤耕2
作者信息
- 1. 南京大学环境学院 污染控制与资源化研究国家重点实验室,江苏 南京 210023
- 2. 南京大学环境学院 污染控制与资源化研究国家重点实验室,江苏 南京 210023;江苏省大气环境与装备技术协同创新中心,江苏 南京 210044
- 折叠
摘要
以南京某高校典型大学生宿舍为研究对象,通过对宿舍内外 4 种主要污染物(CH2O,O3,PM2.5 和PM10)在不同季节和通风情景下的同步监测,评估室内空气质量状况并分析不同污染物时间变化特征和室内外差异及两者影响因素.结果显示,CH2O浓度明显超标,最大小时浓度超标 1.6 倍.夏季CH2O和O3 的浓度明显高于冬季,PM10 和PM2.5浓度差异则相反.室内CH2O浓度显著高于室外,O3 浓度低于室外,表明CH2O主要由室内产生,O3 主要来源室外.室内外颗粒物浓度相差较小,同时受到室内外来源影响.开窗通风可显著降低室内CH2O浓度,但可能导致O3 浓度升高,对颗粒物的影响则与室内外来源相对强弱有关.
Abstract
This study took typical dormitories of a university in Nanjing as the research object.Basing on the synchronous monitoring of four widely concerned pollutants(CH2O,O3,PM2.5 and PM10)inside and outside the dormitories in different seasons and ventilation scenarios,the indoor air quality was assessed,and differences between the indoor and outdoor and influencing factors were discussed.The results showed that the hourly concentration of CH2O exceeded the standard significantly,by 1.6 times for the maximum value.The concentrations of CH2O and O3 were remarkably higher in summer than in winter,while it was opposite for PM10 and PM2.5.The concentrations of indoor CH2O and O3 were significantly higher and lower than that of outdoor,indicating CH2O is mainly originated from indoor sources,while O3 is from outdoor.The differences of PM2.5 and PM10 concentrations between indoor and outdoor were relatively small,indicating they were affected by both indoor and outdoor sources.Window ventilation can significantly reduce indoor CH2O concentration,but may lead to an increase in O3,and the effect on particulate matters is associated with the relative strength of indoor and outdoor sources.
关键词
室内空气污染/甲醛/臭氧/颗粒物Key words
Indoor air pollution/Formaldehyde/Ozone/Particulate matter引用本文复制引用
出版年
2024
NETL
NSTL
万方数据