Abstract
An aerosol test system which permits the study of the interactions between aerosol particles, carrier gas, and various pollutants, including radioactive atoms and ions, is described. The system includes aerosol generator, contact and retention chambers, scattered light sensor units and multichannel analyzer, and cascade impact-ors. Aerosol flow is controlled by means of solenoid valves. Read-out of particle data from the multichannel analyzer is by typewriter, recorder, and punched paper tape for input to an IBM 1620 or 7040 computer for calculation of particle distribution parameters. The flexibility of the system has been shown in studies involving carbon, titanium dioxide, and fly-ash particles in nitrogen, argon, and argon plus water vapor carrier gases and the daughters of radon-220.