Aerosol characterization with centrifugal aerosol spectrometers: Theory and experiment

Technical Report · Sun Jan 01 04:00:00 EST 1989

OSTI ID:6407591

Johnson, D L; Martonen, T B

A general mathematical model describing the motion of particles in aerosol centrifuges has been developed. It has been validated by comparisons of theoretically predicted calibration sites with experimental data from tests sizing aerosols in instruments of three different spiral duct configurations. By accurately simulating factors which influence centrifuge performance, the model enhances the versatility of existing instruments and promotes CAD (computer aided design) and CAM (computer aided manufacture) of new units. The model will permit more accurate aerodynamic classifications of airborne particles. Therefore, more precise determinations of deposition sites of inhaled aerosols within the lung will be possible, since such locations are primarily functions on the dynamic characteristics of motion. U.S. EPA risk assessment protocols of pollutant aerosols will thereby be improved.

• Research Organization: Environmental Protection Agency, Research Triangle Park, NC (USA). Health Effects Research Lab.
• OSTI ID: 6407591
• Report Number(s): PB-91-109496/XAB; EPA--600/J-89/457
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ACCURACY
AERODYNAMICS
AEROSOLS
AIR POLLUTION MONITORING
CALIBRATION
CENTRIFUGAL FAST ANALYZERS
COLLOIDS
COMPUTER-AIDED DESIGN
DISPERSIONS
FLUID MECHANICS
INHALATION
INTAKE
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MECHANICS
PARTICLE SIZE
RETENTION
RISK ASSESSMENT
SIMULATION
SIZE
SOLS
SPECTROMETERS
TESTING
VALIDATION