Grooved impactor and inertial trap for sampling inhalable partic

Details Grooved impactor and inertial trap for sampling inhalable partic Grooved impactor and inertial trap for sampling inhalable partic

1982-02-23

1984-06-05

Kreitman, Stephen A.

Measuring and testing

Gas analysis

Solid content of gas

G01N 1502

Patent

active

044520689

ABSTRACT:
An inertial trap and grooved impactor for providing a sharp cutoff for particles over 15 microns from entering an inhalable particulate sampler. The impactor head has a tapered surface and is provided with V-shaped grooves. The tapered surface functions for reducing particle blow-off or reentrainment while the grooves prevent particle bounce. Water droplets and any resuspended material over the 15 micron size are collected by the inertial trap and deposited in a reservoir associated with the impactor.

REFERENCES:
patent: 555553 (1896-03-01), Austin
patent: 1519428 (1924-12-01), Wilisch
patent: 3252323 (1966-05-01), Torgeson
patent: 3623828 (1971-11-01), Shapiro
patent: 3795135 (1974-03-01), Andersen
patent: 4133202 (1979-01-01), Marple
patent: 4255172 (1981-03-01), Smith
patent: 4275566 (1981-06-01), Bonn
patent: 4279156 (1981-07-01), Bell
Benjamin Y. H. Liu et al., "Aerosol Sampling Inlets and Inhalable Particles", Particle Technology Lab. Pub. No. 397, Oct. 1979.

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