Grooved impactor and inertial trap for sampling inhalable particulate matter
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.
- Inventors:
-
- Oakland, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 865027
- Patent Number(s):
- 4452068
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- grooved; impactor; inertial; trap; sampling; inhalable; particulate; matter; providing; sharp; cutoff; particles; 15; microns; entering; sampler; head; tapered; surface; provided; v-shaped; grooves; functions; reducing; particle; blow-off; reentrainment; prevent; bounce; water; droplets; resuspended; material; micron; size; collected; deposited; reservoir; associated; tapered surface; particulate matter; reducing particle; water droplets; micron size; v-shaped grooves; sharp cutoff; inertial trap; grooved impactor; inhalable particulate; v-shaped groove; prevent particle; /73/
Citation Formats
Loo, Billy W. Grooved impactor and inertial trap for sampling inhalable particulate matter. United States: N. p., 1984.
Web.
Loo, Billy W. Grooved impactor and inertial trap for sampling inhalable particulate matter. United States.
Loo, Billy W. Sun .
"Grooved impactor and inertial trap for sampling inhalable particulate matter". United States. https://www.osti.gov/servlets/purl/865027.
@article{osti_865027,
title = {Grooved impactor and inertial trap for sampling inhalable particulate matter},
author = {Loo, Billy W},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1984},
month = {Sun Jan 01 00:00:00 EST 1984}
}
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