Multielement comparison of instrumental neutron activation analysis techniques using reference materials

  • R. T. Ratner
  • W. G. Vernetson
Radioanalytical Methods: Data Quality, Method Validation and Use of Standard Reference Materials

Abstract

Several instrumental neutron activation analysis techniques (parametric, comparative, and ko-standardization) are evaluated using three reference materials. Each technique is applied to National Institute of Standards and Technology standard reference materials, SRM 1577a (Bovine Liver) and SRM 2704 (Buffalo River Sediment), and the United States Geological Survey standard BHVO-1 (Hawaiian Basalt Rock). Identical (but not optimum) irradiation, decay, and counting schemes are employed with each technique to provide a basis for comparison and to determine sensitivities in a routine irradiation scheme. Fifty-one elements are used in this comparison; however, several elements are not detected in the reference materials due to rigid analytical conditions (e.g., insufficient length of irradiation or activity for radioisotope of interest decaying below the lower limit of detection before counting interval). Most elements are normally distributed around certified or consensus values with a standard deviation of 10%. For some elements, discrepancies are observed and discussed. The accuracy, precision, and sensitivity of each technique are discussed by comparing the analytical results to consensus values for the Hawaiian Basalt Rock to demonstrate the diversity of multielement applications.

Keywords

United States Lower Limit Reference Material Geological Survey Instrumental Neutron Activation Analysis 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    A. SIMONITS, F. DE CORTE, J. HOSTE, J. Radioanal. Chem., 24, (1975) 31.Google Scholar
  2. 2.
    F. DE CORTE, The ko-Standardization Method: A Move to the Optimization of Neutron Activation Analysis, Thesis, University of Gent, Belgium (1987).Google Scholar
  3. 3.
    O. T. HØGDAHL, ‘Neutron Absorption in Pile Neutron Activation Analysis’, Report of the Michigan Memorial Phoenix Project, Report MMPP-226-1, University of Michigan, December (1962).Google Scholar
  4. 4.
    K. GOVINDARAJU, Geostandards Newsletter, 13, (1989) Appendix 1.Google Scholar

Copyright information

© Akadémiai Kiadó 1995

Authors and Affiliations

  • R. T. Ratner
    • 1
  • W. G. Vernetson
    • 2
  1. 1.Pacific Northwest LaboratoryRichlandUSA
  2. 2.Department of Nuclear Engineering SciencesUniversity of FloridaGainesvilleUSA

Personalised recommendations