Silica Analysis of Industrial Hygiene Samples by X-Ray Diffraction: Interim Report

  • D. T. Donovan
  • J. W. Knauber
  • F. H. VonderHeiden
Part of the Progress in Analytical Chemistry book series (PAC, volume 176)


Following development of an x-ray diffraction packed powder internal standard procedure 1, 2 for analyzing settled dust samples for free silica, a method was designed for respirable air-borne quartz. Silver membrane filters, because of their greater resistance to humidity, were being used for gravimetric determinations of inert or nuisance dusts. Further, it was determined that the x-ray diffraction pattern of the silver membrane was flat and even and that silver had no interfering peaks and should be adaptable to direct quartz analysis. Talvitie, Brewer, Knott and Oberg had shown the possibility of a more direct technic for the x-ray diffraction analysis of air-borne dusts. 3, 4, 5


Calcium Fluoride Cyclone Separator Free Silica Pennsylvania Department Silver Peak 
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Copyright information

© Plenum Press, New York 1973

Authors and Affiliations

  • D. T. Donovan
    • 1
  • J. W. Knauber
    • 1
  • F. H. VonderHeiden
    • 1
  1. 1.Pennsylvania Department of Environmental ResourcesBureau of Occupational HealthHarrisburgUSA

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