Application of X-ray Diffraction to the Determination of Chrysotile in Bulk or Settled Dust Samples

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Abstract
A quantitative procedure has been developed for analyzing bulk or settled dust samples for chrysotile, the asbestos fiber most widely used in the United States asbestos industry. This asbestos mineral is a hydrated magnesium silicate with a crystalline structure which provides a distinct x-ray diffraction pattern of sufficient intensity to be used in quantitative analyses. X-ray diffraction is utilized for qualitative and quantitative determinations of this type of asbestos. The qualitative method establishes the presence of the fibers in the dust samples and indicates possible interferences. An internal standard, aquamarine, is used in the quantitative determination of the asbestos mineral. This method for chrysotile is not limited to environmental samples but can be applied to 1-gm samples of materials from other sources.

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