No abstract

Abstract. In recent years, haze weather happens frequently. PM2.5 and PM10 are the main factors that affect the haze weather, so they deserve to be studied. The study will help to propose better measures to improve the indoor air quality. This paper is to study the relevance of indoor and outdoor concentrations of particulate matter, the daily variation of indoor particulate matter concentrations and the horizontal distribution law of particulate pollution in campus buildings. Through the study, it can be seen that outdoor particulate pollutants is the main source of indoor particulate matter and there is no significant difference in the average particle concentration between the daytime and night.