人为活动对室内空气质量的影响

Effect of Human Activities on Indoor Air Quality

为了探讨人为活动对导致室内环境空气质量恶化的影响程度,分析研究不同人为活动对室内颗粒物的影响,选择某高校5个代表性人为活动点为监测点,同步实时监测室内颗粒数浓度和细颗粒物PM2.5质量浓度的变化,并记录人为活动和相关通风信息。结果表明,不同人为活动产生的颗粒数浓度和PM2.5质量浓度有所差异,其中食堂所测的平均颗粒数浓度和平均质量浓度分别为242 266 cm-3、124.2μg/m3,远远高于其他室内活动对颗粒物浓度的影响;在各项人为活动中,拖地时产生的颗粒数浓度和质量浓度最小;在进行室内活动时,特别是烹饪等污染物排放量较大的活动,应尽量缩短工作时间,同时加强通风,降低在高危污染环境中的暴露风险。

To investigate the impact of human activities on indoor air quality, real-time monitoring of PM2.5and particle numbers was carried out at five typical indoor locations in the campus of Xi 'an Jiaotong University.The relevant information such as human activities and ventilation information was recorded simultaneously. The results show that the particle number concentrations and PM2.5mass concentrations vary as different human activities. The average concentrations of particle number(242 266 cm-3) and PM2.5mass(124.2 μg/m3) in the student canteen are much higher than other indoor environment, showing that cooking activities is a major contributor to indoor particulate pollution. Mopping is a recommended cleaning method since it significantly reduces indoor particle loadings. People should shorten exposure hours and enhance ventilation when they are doing cooking activities.