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Methods for the Selective Sampling of Diesel Particulate in Mine Dust Aerosols.

Authors
Marple-VA; Kittelson-DB; Rubow-KL; Fang-C
Source
NTIS: PB 88-130810 Available for Reference At Bureau Libraries :94 pages
Link
NIOSHTIC No.
10005977
Abstract
This paper describes an investigation into time-integrated and real- time methods for determining the diesel exhaust particulate concentration in underground mines, particularly coal mines. The microorifice uniform deposit impactor is recommended for obtaining the time-integrated measurement of the size distribution. The mass concentration of diesel exhaust particles can be obtained from the particle size distribution of mine aerosols. On a mass basis, diesel exhaust particles are primarily in the submicrometer size range while coal dust particles are larger. Size distribution measurements made in the laboratory and in three underground coal mines exhibited two distinct modes with the diesel exhaust particles in the smaller particle mode and the coal particles in the larger particle mode. The point of separation between the two modes occurred in the 0.7- to 1.0-Um size range. The separation was found to be independent of mass fraction of the diesel exhaust particles, particle concentration, and sampling site. Methods recommended for further consideration as real-time monitors of diesel exhaust aerosols in mines are photometers and filter pressure drop techniques. A preclassifier would be required in both cases to separate the larger dust particles from the sample.
Publication Date
19860101
Document Type
CP; Final Contract Report;
Fiscal Year
1986
NTIS Accession No.
PB88-130810
NTIS Price
A06
Identifying No.
OFR 44-87
NIOSH Division
PRC;
Source Name
NTIS: PB 88-130810. Available for Reference At Bureau Libraries
State
MN;
Performing Organization
University of Minnesota
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