Determination of Aspirated Aerosol Sampler Efficiencies using Laser Reference Techniques

摘要

Aerosol sampling is a complicated problem in aersol physics. A technique is described to continuously monitor the mass concentration of monodisperse test aerosols using a He:Ne laser. Precise approximations are possible from the Mie theory. The method is fast and accurate, and it eliminates the need for precalibration of a 'standard' sampler against which candidate samplers must be compared. It is not limited to sampler efficiency measurements but can be used wherever it is desirable to continuously monitor test aerosols of spherical droplets, e.g., in studies of the human respiratory system.