Radiochemical neutron activation analysis of trace impurities in high purity aluminum

  • J. H. Zaidi
  • M. Arif
  • I. Fatima
  • S. Ahmed
  • I. H. Qureshi
Article

Abstract

Rapid radiochemical neutron activation analysis (RNAA) procedures were developed and employed for the determination of 32 trace impurities in high purity aluminum thin foils. Anion exchange column chromatography was developed for the sequential group chemical separation of various elements which helped in reducing the spectral interferences and improving the sensitivity of the method. The procedure is simple and requires a very short time to separate the elements in three groups for radiometric assay. To determine very low contents of uranium and thorium,239Np and233Pa as activation products were separated using anion exchange and coprecipitation methods. The impurity contents were found to be low, therefore, their adverse effects on microelectronic devices would be negligible. Our data could partially be compared with the data reported in literature.

Keywords

Uranium Column Chromatography Thorium Anion Exchange Thin Foil 

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Copyright information

© Akadémiai Kiadó 1999

Authors and Affiliations

  • J. H. Zaidi
    • 1
  • M. Arif
    • 1
  • I. Fatima
    • 1
  • S. Ahmed
    • 1
  • I. H. Qureshi
    • 1
  1. 1.Nuclear Chemistry DivisionPakistan Institute of Nuclear Science and TechnologyIslamabadPakistan

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