Quality Assessment of INAA Data for Small-sized Environmental Reference Samples

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  • WIMOLWATTANAPUN Wanna
    Thailand Institute of Nuclear Technology
  • BUNPRAPOB Supamatthree
    Thailand Institute of Nuclear Technology
  • HO Mang Dung
    Nuclear Research Institute
  • SUTISNA
    Center for Technology of Nuclear Industry Material, National Nuclear Energy Agency of Indonesia (BATAN)
  • OURA Yasuji
    Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University
  • EBIHARA Mitsuru
    Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University

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Description

Instrumental neutron activation analysis (INAA) was applied for the accurate and precise determination of minor and trace elements in small-sized aliquants (1 to 2 mg) of two certified reference materials (CRM), NIES No. 8 and NIST 1632c. Four laboratories used either comparative- or k0-INAA, or both, and repeated the analysis more than ten times for each CRM. Based on z-scores and zeta scores of analytical data, QA/QC in analyzing such small scale of the two reference samples was assessed, revealing that there was a clear difference in the analytical ability among participating laboratories. It was concluded that the two CRM samples on the mg scale can be used as reference samples in INAA of a similarly small-scaled sample, at least for the 16 – 18 elements examined.

Journal

  • Analytical Sciences

    Analytical Sciences 30 (8), 787-792, 2014

    The Japan Society for Analytical Chemistry

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