Size-selective monitoring techniques for particulate matter in California air. Final report

Technical Report · Tue Jan 31 23:00:00 EST 1978

OSTI ID:5159029

John, W; Reischl, G P; Wesolowski, J J

After a review of the criteria for a suitable size-selective monitoring instrument, the dichotomous virtual impactor and the cyclone were selected for evaluation. A cyclone was designed with a 50% cutoff of 3.5 micrometers at 15 l/min. The cyclone and the Sierra Model 243 dichotomous virtual impactor were tested extensively with monodisperse aerosol including both solid and liquid particles. Detailed measurements were made of particle deposition in the samplers as a function of particle size and air flow rate. Wall losses, reentrainment and uniformity of filter deposits were determined. The results of the tests show that both samplers are satisfactory for monitoring purposes.

• Research Organization: California Dept. of Health, Berkeley (USA). Air and Industrial Hygiene Lab.
• OSTI ID: 5159029
• Report Number(s): PB-80-113731
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
CALIFORNIA
COLLOIDS
CONCENTRATORS
CYCLONE SEPARATORS
DESIGN
DISPERSIONS
EQUIPMENT
INERTIAL SEPARATORS
LABORATORY EQUIPMENT
MONITORING
NORTH AMERICA
PARTICLE SIZE
PERFORMANCE TESTING
POLLUTION CONTROL EQUIPMENT
SAMPLERS
SAMPLING
SIZE
SOLS
TESTING
USA
WESTERN REGION