Sampling and data handling methods for inhalable particulate sampling. Final report nov 78-dec 80
The report reviews the objectives of a research program on sampling and measuring particles in the inhalable particulate (IP) size range in emissions from stationary sources, and describes methods and equipment required. A computer technique was developed to analyze data on particle-size distributions of samples taken with cascade impactors from industrial process streams. Research in sampling systems for IP matter included concepts for maintaining isokinetic sampling conditions, necessary for representative sampling of the larger particles, while flowrates in the particle-sizing device were constant. Laboratory studies were conducted to develop suitable IP sampling systems with overall cut diameters of 15 micrometers and conforming to a specified collection efficiency curve. Collection efficiencies were similarly measured for a horizontal elutriator. Design parameters were calculated for horizontal elutriators to be used with impactors, the EPA SASS train, and the EPA FAS train. Two cyclone systems were designed and evaluated. Tests on an Andersen Size Selective Inlet, a 15-micrometer precollector for high-volume samplers, showed its performance to be with the proposed limits for IP samplers. A stack sampling system was designed in which the aerosol is diluted in flow patterns and with mixing times simulating those in stack plumes.
- Research Organization:
- Southern Research Inst., Birmingham, AL (USA)
- OSTI ID:
- 6494362
- Report Number(s):
- PB-82-249897
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOL MONITORING
AIR POLLUTION MONITORS
AIR SAMPLERS
CASCADE IMPACTORS
CONCENTRATORS
CYCLONE SEPARATORS
DESIGN
EQUIPMENT
EVALUATION
INERTIAL SEPARATORS
INHALATION
INTAKE
MEASURING INSTRUMENTS
MONITORING
MONITORS
PARTICLE SIZE
PARTICLES
PARTICULATES
PERFORMANCE
POINT POLLUTANT SOURCES
POLLUTION CONTROL EQUIPMENT
POLLUTION SOURCES
SAMPLERS
SAMPLING
SEPARATION EQUIPMENT
SIZE