Aerosol research and development related to health hazards analysis, July 1, 1975--June 30, 1976. [Coal mine air sampler performance testing]

Technical Report · Fri Oct 01 04:00:00 EDT 1976

DOI:https://doi.org/10.2172/7324276· OSTI ID:7324276

Tests evaluating the British Mines Research Establishment (MRE) Horizontal Elutriator for sampling airborne fibrous glass were completed. Results confirm that impactor characterization of fibrous glass aerosols provides a reasonable approximation of the respirable mass fraction as defined by the American Conference of Governmental Industrial Hygienists (ACGIH) and the British Medical Research Council (BMRC) standards. Supplementary fiber-sizing data further indicate that the impactor provides diameter related size separation of fibrous glass aerosols. Test characterization of a new fibrous glass aerosol indicates that it is highly respirable material suitable for animal inhalation studies. Machine drawings of our fibrous aerosol generator have been made available to the public. The particulate filtration efficiency of industrial gas-vapor sampler tubes was determined. This filtration efficiency is of interest for work environments containing toxic vapors and particulates of the contaminant, or inert particles containing adsorbed contaminant. The sampler tubes collect from 70-90 percent of the particles entering, but only 20 percent of the total is deposited on the active sorbent (charcoal granules). Considerable variability in collection efficiency between tubes was observed. Recommendations are made for obtaining improved contaminant estimates using these tubes. The preliminary design of a real-time particle sizing sampler for use in coal mines is described.

• Research Organization: Los Alamos Scientific Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 7324276
• Report Number(s): LA-6539-PR
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
AIR POLLUTION
AIR POLLUTION MONITORS
AIR SAMPLERS
COAL MINES
COLLOIDS
DESIGN
DISPERSIONS
DUSTS
ENVIRONMENT
LABORATORY EQUIPMENT
MINES
PARTICLE SIZE
PERFORMANCE TESTING
POLLUTION
SAMPLERS
SAMPLING
SIZE
SOLS
TESTING