Title: “Characteristics of particulate matter resuspension due to human activities in indoor environments”
Abstract
Particulate matter resuspension from indoor surfaces is a significant contributor to occupant exposure to airborne particles. Numerous field studies have identified it as a primary source of indoor air pollution. The process of PM resuspension is influenced by several factors, which can be
broadly categorized into three groups: the characteristics of the particulate matter itself, the indoor environmental conditions, and human-related
activities. Human movements, such as walking, and other activities are responsible for disturbing settled particles on surfaces, lifting them back into the air. This resuspension not only contributes to increased exposure to particulate matter but also poses a potential health risk, as it can release pathogens and bioaerosols into the indoor air. Inhalation of these particles could lead to respiratory infections and other health issues. Other factors, such as indoor relative humidity, the type of flooring materials, and specific patterns of human activity, also influence the resuspension of particulate matter. The combined effects of these different factors on indoor air quality need more in-depth research to fully comprehend their impact and the mechanisms driving the resuspension of particulate matter in indoor environments.
About the Speaker
Dr. Chithra V. S. holds a B.Tech degree from the University of Kerala, a Master’s degree from Anna University, Chennai, and a Ph.D. in Environmental Engineering from the Indian Institute of Technology Madras. She is currently serving as a Scientist in the Ecology and Environment Research Group at the Centre for Water Resources Development and Management in Calicut, Kerala. With over 10 years of experience in academia and research, her expertise lies in indoor air quality, air pollution modeling, emission inventory, source apportionment, and the health and environmental impacts of air pollution. Dr. Chithra has received several fellowships and awards, including the Rekha Nandi and Bhupesh Nandi Prize from The Institution of Engineers
(India) and the Shree Gayathree Devi Award from IIT Madras. She has published more than 40 research papers in leading international and national journals and conferences. Additionally, she is an active member of professional organizations such as the Institution of Engineers (India) and the Indian Society for Technical Education and serves as a reviewer for several journals.
