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Determination of Alpha Quartz Particle Distribution in Respirable Coal Mine Dust Samples and Reference Standards.

Authors
Huggins-CW; Johnson-SN; Segreti-JM; Snyder-JG
Source
MISSING :7 pages
Link
NIOSHTIC No.
10004654
Abstract
The objective of this Bureau of Mines research was to compare the size distribution of respirable quartz collected at coal mines with that of several reference standards used to quantify quartz in coal mine dust samples. Particle size measurements were made on 23 samples and 4 reference standards using a scanning electron microscope in the backscatter electron mode of operation, interfaced with an image analysis system. The Mine Safety and Health Administration provided the 23 respirable coal mine dust samples, which were collected at surface and underground coal mines in 7 states. The accumulated particle size measurements indicate three of the reference standards, minus 5-um min-u-sil, minus 5-um supersil, and NBS 1878, would be preferred over the fourth, silver bond b, for quantitative quartz determinations in coal mine dusts by x-ray diffraction and infrared spectrometry.
Publication Date
19850101
Document Type
IH; Report of Investigations
Fiscal Year
1985
NTIS Accession No.
NTIS Price
Identifying No.
RI 8975
NIOSH Division
AVRC;
Source Name
MISSING
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