Chemical homogeneity of National Bureau of Standards coal flyash (SRM 1633a)

  • R. L. Korotev
Article

Abstract

The chemical homogeneity of 10 mg samples of the (U. S.) National Bureau of Standards standard reference material 1633a (coal flyash) was determined for several elements by instrumental neutron activation analysis. The homogeneity was tested for the purpose of using small samples of the flyash as a multielement comparator standard. For small sample masses the flyash may be unacceptably heterogeneous for Fe, Co, Ba, and perhaps As and Sb. Homogeneity is improved by grinding the flyash. For comparison, homogeneity data for USGS GSP-1 is also presented.

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Copyright information

© Akadémiai Kiadó 1987

Authors and Affiliations

  • R. L. Korotev
    • 1
    • 2
  1. 1.Department of Earth and Planetary Sciences for the Space Sciences Washington UniversitySt. Louis(USA)
  2. 2.McDonnell Center for the Space Sciences Washington UniversitySt. Louis(USA)

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