Reference material for the quantitation of alpha-quartz in respirable dust by X-ray diffraction

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<title>Reference material for the quantitation of alpha-quartz in respirable dust by X-ray diffraction</title>
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<title>The Annals of occupational hygiene</title>
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<namePart>Altree-Williams, Stephen</namePart>
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<namePart>Byrnes, John G.</namePart>
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<namePart>Norman, Meade B.</namePart>
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<abstract displayLabel="Summary">Two specifications are given for an alpha-quartz reference material suitable for use by the international occupational hygiene community in the quantitation of alpha-quartz in respirable dust by the X-ray diffraction method. The specifications are based on results obtained in a detailed investigation of the properties of respirable-size alpha-quartz samples from 12 different geological and commercial sources. The properties investigated were amorphous surface content, crystallinity index, preferred orientationn, and particle size distribution</abstract>
<note type="statement of responsibility">Stephen Altree-Williams, John G. Byrnes and Meade B. Norman</note>
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<topic>Higiene industrial</topic>
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<topic>Contaminantes químicos</topic>
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<text>nº 4, 1981 ; p. 347-356</text>
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