Correlation Analysis of Indoor and Outdoor PM2.5 and Exploration of Prevention Methods

Abstract

In order to study the correlation of indoor and outdoor PM2.5 concentrations, five sampling points are selected in Hunnan New District of Shenyang City. The PM2.5 concentration inside and outside the five buildings were monitored in December 2018. After that, the writers analyze the variation characteristics and trends, and explore the prevention and control methods to indoor and outdoor PM2.5. The results show that there is a significant correlation between indoor and outdoor PM2.5 concentration, and the concentration is affected by opening or closing windows. When there is no indoor pollution source, indoor pollutants mainly come from outdoor infiltration. The prevention and control of PM2.5 pollution can be divided into indoor and outdoor aspects. Scholars often ignore the harm of PM2.5 to human body when they stay in the house. In indoor environment, PM2.5 is analyzed through aerodynamics. Due to the slow air flow, the inhalation volume of human body is more than that in the outdoor environment with fast air flow. In this paper, we will discuss how to reduce the harm of PM2.5 to human body and create a healthy living environment for residents.