摘要：为研究天津市居民住宅内PM_2.5浓度及其影响因素, 监测天津市4个家庭室内PM_2.5浓度, 分析室内人员活动、烹饪行为和空气净化器对室内PM_2.5浓度的影响。结果表明:随人员活动增加, 室内PM_2.5浓度逐渐增大;烹饪时平均浓度是烹饪之前浓度的3倍左右;使用空气净化器能使室内PM_2.5浓度减少58%左右。

关键词：细颗粒物（PM_2.5）；室内空气质量；影响因素

Abstract：To investigate the indoor PM_2.5 concentration and its influence factors of residences in Tianjin, the article conducted a measurement on four families in different communities in Tianjin, as well as analyzed the main influence factors including the activities of indoor personnel, the cooking emission and the air purifier. The results show that the PM_2.5 concentration increases gradually along with the rise in staff activities, the cuisine causes 3 times the concentration of PM_2.5 before cooking and the PM_2.5 is reduced about 58% by opening air purifier.

Keywords: fine particwlate matter；indoor air quality；imfluence factor