Dynamic characteristics of particulate matter resuspension due to human activities in indoor environments: A comprehensive review

Particulate matter (PM) resuspension from indoor surfaces is one of the leading causes of occupant exposure to PM. It has been recognized as a main source of indoor air pollution by many field studies. This review article explores the mechanisms and effects of single and multiple influential factors on PM resuspension, distribution characteristics, spatial and temporal PM distribution characteristics and interactions of human activities and mitigation measures. A roadmap is proposed to provide a strong basis for subsequent research into the dynamic characteristics of PM resuspension. The synthesis of existing literature suggests that the mechanism behind the opposite effect caused by multiple influential factors deserves further exploration. Microscopic simulations of motion over short periods and richer activity features based on various scenarios are needed to get more accurate results. More advanced strategies should be considered to change the control process and enhance the efficiency of the purification devices. Collaboration between multiple disciplines is required to get the complete picture of PM resuspension.