Radiochemical neutron activation analysis of chromium in biological materials using ion chromatography with “on-line” yield determination

  • R. W. Woittiez
  • A. Lagerwaard
  • K. J. Volkers
  • M. DC. Tangonan


The use of ion chromatography with continuous UV detection for radiochemical separation of Cr with simultaneous yield determination is presented. The RNAA method consists of sample destruction in HNO3+HClO4, extraction of Cr(VI) with tribenzylamine in CHCl3, backextraction in NaOH and chromatography of chromate. From radiotracer experiments, the ratio of signals for51Cr and Cr spike was found to be constant for a chromium mass range of 15 to 100 μg. Application of the RNAA method to Cr determination in biological reference materials showed a reasonable agreement with the reference values. A relative standard deviation of 3% on the 100 μg/kg level for homogeneous material was achieved.


Chromium CHCl3 Relative Standard Deviation Neutron Activation Neutron Activation Analysis 
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Copyright information

© Akadémiai Kiadó 1993

Authors and Affiliations

  • R. W. Woittiez
    • 1
  • A. Lagerwaard
    • 1
  • K. J. Volkers
    • 1
  • M. DC. Tangonan
    • 1
  1. 1.Interfaculty Reactor InstituteDelft University of TechnologyDelft(The Netherlands)

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