Determination of trace elements in reference materials by the k(0)-standardization method (INAA).
Instrumental neutron activation analysis was applied to four reference materials: NBS 1573 (Tomato Leaves), NBS 1645 (Citrus Leaves), NBS 1645 (River Sediment), and IAEA MA-A-2 (TM) (Fish Flesh). The k(0)-standardization method was used. The results are compared with (i) reference values (mostly non-certified) and (ii) published values obtained by other methods. Good agreement is found for most of the elements. For some elements, large discrepancies are observed.
Freitas
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LNETI/ICEN-Departamento de Energia e Engenharia Nucleares, 2686 Sacavém Codex, Portugal.
Martinho
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