The use of element ratios to eliminate analytical bias in cold neutron prompt gamma-ray activation analysis

  • R. L. Paul
Article

Abstract

Analytical bias due to neutron scattering and absorption in cold neutron prompt gamma-ray activation analysis (CNPGAA) is largely eliminated for homogeneous samples when element ratios are measured. Application of sensitivity ratios (measured relative to titanium) to the multielement analysis of the Allende meteorite increases both the speed and accuracy of the measurement. Greater measurement accuracy is achieved for some samples when ratios of element concentrations are reported. Problems are encountered when applying the ratio method to measurement of elements which deviate from 1/v behavior, and when gamma-ray attenuation or sample heterogeneity are significant.

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Copyright information

© Akadémiai Kiadó 1995

Authors and Affiliations

  • R. L. Paul
    • 1
  1. 1.National Institute of Standards and Technology, Analytical Chemistry DivisionDepartment of Commerce, Technology AdministrationGaithersburg(USA)

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