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On-filter analysis of quartz in respirable coal dust by infrared absorption and x-ray diffraction.

Authors
Freedman-RW; Toma-SZ; Land-HW
Source
Am Ind Hyg Assoc J 1974 Jul; 35(7):411-418
NIOSHTIC No.
00025901
Abstract
An infrared spectometric method and an independent X-ray diffraction method are developed for the analysis of alpha-quartz in airborne respirable coal dust. Sensitivity is such that the procedures can be used for analysis of the material from a single membrane filter similar to the one used for personal samplers by the Mining Enforcement and Safety Administration's enforcement program. Sensitivity down to less than 10 micrograms of quartz is obtainable. The accuracy of the methods is limited by the non-availability of a true quartz standard. In both methods dust is transferred ultrasonically from the collection filter to a small area of a second filter which is relatively infrared-transparent and has a weak X-ray background. The technique provides a substantial increase in area concentration and attendant sensitivity. Both methods, in principle, are capable of use with a wide variety of solid materials such as respirable pure quartz and coal dust.
Keywords
Quartz-dust; Respirable-dust; Aerosol-particles; Airborne-dusts; Particulate-dust; Mining-industry; Coal-mining; Sampling-equipment; Dust-sampling; Dust-collection; Dust-counting; Analytical-methods; Mineral-dusts; Sampling-techniques; Dust-control; Particle-size-analysis; Measurement-instrumentation; Inhalation
CODEN
AIHAAP
CAS No.
1317799
Publication Date
19740701
Document Type
Journal Article
Fiscal Year
1974
NTIS Accession No.
NTIS Price
Issue of Publication
7
ISSN
0002-8894
NIOSH Division
PRC
Source Name
American Industrial Hygiene Association Journal
State
PA
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