Characterization of particulate matter in commercial flights and other indoor environments

Date: March 10, 2021 4:00 pm (ET)


  • Nga Lee (Sally) Ng
    Georgia Tech
Nga Lee (Sally) Ng

Associated Professor and Tanner Faculty Fellow
School of Chemical and Biomolecular Engineering
School of Earth and Atmospheric Sciences
School of Civil and Environmental Engineering
Georgia Institute of Technology

Air quality in indoor environments can have significant impacts on people’s health, comfort, and productivity. Exposure to particulate matter (PM) has been shown to be associated with a variety of diseases. Also, over the course of the COVID-19 pandemic, there is increased recognition and concern of air airborne transmission of viruses, especially in indoor environments. In this work, we measured and compared particle number and mass concentrations in aircraft cabins during commercial flights with various indoor environments in Atlanta, GA, during July 2020, including retail stores, grocery stores, restaurants, offices, transportation, and homes. Size-resolved particle levels across all indoor spaces will be presented and discussed. The results highlight the importance of high ventilation rates and clean air supply (clean outside air and/or HEPA-filtered recirculated air) in reducing indoor PM levels.