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PROCEEDINGS: ADVANCES IN PARTICLE SAMPLING AND MEASUREMENT (DAYTONA BEACH, FL, OCTOBER 1979)
Citation:
Smith, W. PROCEEDINGS: ADVANCES IN PARTICLE SAMPLING AND MEASUREMENT (DAYTONA BEACH, FL, OCTOBER 1979). U.S. Environmental Protection Agency, Washington, D.C., EPA/600/9-80/004.
Description:
The proceedings consist of 20 reports of research on equipment and techniques for sampling and characterizing particulate emissions and other aerosols. The inhalable particle size range (up to 15 micrometers) is emphasized, and the basis for selecting this range as a standard is discussed. Novel or improved equipment includes: virtual impactors; impactors for sampling high dust loadings; an impactor/quartz-crystal-microbalance combination used to sample stratospheric aerosols; a tapered-element oscillating microbalance for monitoring particulate emissions and aerosols; an automated piezoelectric microbalance for monitoring atmospheric aerosols; a hot-wire probe for measuring liquid droplets; sampling systems that are improvements on EPA Method 5 equipment for measuring mass emissions; and more efficient sampling probe inlets. New or improved techniques include: measurement of aerodynamic diameter by laser/doppler velocimetry of particles accelerated in a converging nozzle; automation of diffusion-battery/condensation nucleus counter systems; sampling inhalable particles in fugitive aerosols; particle-size spectrometry for characterizing inhalation toxicity; computer extrapolation of particle-size ranges; and the identification of impactor errors due to nonideal behavior to particle deposition in sampling probe nozzles.