In-situ aerodynamic sizing of aerosol particles with the SPART analyzer. Final report Jun 76-Feb 80
A single particle aerodynamic relaxation time (SPART) analyzer has been developed to measure the aerodynamic size distribution of aerosol particulates in the range 0.1 to 10.0 micrometer in diameter. The analyzer sizes and counts individual suspended particles and droplets from sampled aerosols, determines their aerodynamic diameter, and generates the size distribution in real-time. The measurement is independent of the electrical and optical properties of the particles. The size range and resolution of the SPART analyzer depend on the acoustic frequency. Operating at 27 kHz, the instrument's effective sampling rate was calibrated in the range of 0.3 to 6.0 pm using test aerosols containing monodisperse polystyrene latex spheres (PLS) and olive oil droplets. The instrument can count and size aerosol particulates at a maximum rate of 200 particles/sec. The sensing volume of the instrument is approximately .00001 cc, which allows the size distribution measurement of an aerosol containing a relatively high particulate concentration without an appreciable coincidence loss.
- Research Organization:
- Arkansas Univ., Little Rock (USA)
- OSTI ID:
- 7074522
- Report Number(s):
- PB-82-197195
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
AIR POLLUTION
COLLOIDS
DISPERSIONS
ELECTRICAL PROPERTIES
MEASURING INSTRUMENTS
OPTICAL PROPERTIES
PARTICLE SIZE
PARTICLES
PARTICULATES
PERFORMANCE TESTING
PHYSICAL PROPERTIES
POLLUTION
RESOLUTION
SIZE
SOLS
TESTING