Resolving the Loss of Intermediate-Size Speech Aerosols in Funnel-Guided Particle Counting Measurement.

ABSTRACT: Modeling of airborne virus transmission and protection against it requires knowledge of the amount of biofluid emitted into the atmosphere and its viral load. Whereas viral concentrations in biofluids are readily measured by quantitative PCR, the total volume of fluids aerosolized during speaking, as measured by different researchers using different technologies, differs by several orders of magnitude. We compared collection methods in which the aerosols first enter into a low humidity chamber either by direct injection or via commonly used funnel and tubing arrangements, followed by standard optical particle sizer measurement. This "collect first, measure later" approach sacrifices recording of the temporal correlation between aerosol generation and sound types such as plosives and vowels

SUBMITTER: Kakeshpour T 

PROVIDER: S-EPMC11581197 | biostudies-literature | 2024 May

REPOSITORIES: biostudies-literature