Fresenius' Journal of Analytical Chemistry

, Volume 352, Issue 1–2, pp 58–60 | Cite as

Elemental concentrations in the spinach reference material determined by k0-based INAA

  • M. Carmo Freitas
Global Needs For RM


The IAEA-331 spinach material NIST SRM 1570a Spinach Leaves, submitted to an intercomparison run by the IAEA, has been analysed by k0-based INAA with counting using both low and high energy photon detectors. The results have been compared with (i) the certified values of the NIST SRM 1570a; the agreement is good, taking into account the uncertainties; and (ii) the certified and “consensus” values of the former NIST SRM 1570 Spinach Leaves, their composition in minor and trace-elements are quite similar; however a lower content has been observed for Co, Fe and Sc in the IAEA-331 and for Zn in the SRM 1570. For quality control, the NIST 1573 Tomato Leaves and the NIST 1575 Pine Needles have been analysed using the same conditions as for the IAEA-331. The results agree quite well with the certified and “consensus” values given in the literature.


Physical Chemistry Analytical Chemistry Inorganic Chemistry Quality Control Reference Material 
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  1. 1.
    Freitas MC, Martinho E (1989) Anal Chim Acta 219:317–322Google Scholar
  2. 2.
    Freitas MC (1993) The development of k0-standardization neutron activation analysis with counting using a low energy photon detector. Ph. D. Thesis, Gent University, BelgiumGoogle Scholar
  3. 3.
    Ingelbrecht C, Peetermans F, De Corte F, De Wispelaere A, D'Hondt P (1990) 15th World Conf INTDS Special High-Purity Materials & Targets, Sept 10–14, Santa Fe, NMGoogle Scholar
  4. 4.
    Brown E, Firestone RB (1986) Table of radioactive isotopes. Wiley, New YorkGoogle Scholar
  5. 5.
    Op De Beeck J (1972) Private communicationGoogle Scholar
  6. 6.
    Moens L, De Donder J, Lin Xilei, De Corte F, De Wispelaere A, Simonits A, Hoste J (1981) Nucl Instrum Methods 187:451–472Google Scholar
  7. 7.
    De Corte F (1987) The k0-standardization method: A move to the optimization of neutron activation analysis. Aggrégé Thesis, Gent University, BelgiumGoogle Scholar
  8. 8.
    NIST (1994) Certificate of Analysis, Standard Reference Material 1570a Spinach Leaves, October 20, 1994Google Scholar
  9. 9.
    Gladney ES, O'Malley BT, Roelandts I, Gills TE (1987) Compilation of elemental concentration data for NBS clinical, biological, geological and environmental standard reference materials. NBS Special Publication 260–111, Washington, USAGoogle Scholar
  10. 10.
    Becker D (1994) Third Internacional Conference on Methods and Applications of Radioanalytical Chemistry, Kailua-Kona, Hawaii, April 10–16, 1994Google Scholar

Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • M. Carmo Freitas
    • 1
  1. 1.Departmento de QuímicaINETI/Instituto de Ciências e Engenharia NuclearesSacavém CodexPortugal

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