Evaluation of Botanical Reference Materials for the Determination of Vanadium in Biological Samples

Kaj Heydorn, Else Damsgaard

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Three botanical reference materials prepared by the National Bureau of Standards have been studied by neutron activation analysis to evaluate their suitability with respect to the determination of vanadium in biological samples. Various decomposition methods were applied in connection with chemical or radiochemical separations, and results for vanadium were compared with those found by purely instrumental neutron activation analysis. Significantly lower results indicate losses or incomplete dissolution, which makes SRM 1575 Pine Needles and SRM 1573 Tomato Leaves less satisfactory than SRM 1570 Spinach. A reference value of 1.15 mg/kg of this material is recommended, based on results from 3 different methods. All three materials are preferable to SRM 1571 Orchard Leaves, while Bowen's Kale remains the material of choice because of its lower concentration.
    Original languageEnglish
    JournalJournal of Radioanalytical Chemistry
    Volume69
    Issue number1-2
    Pages (from-to)131-146
    ISSN0134-0719
    DOIs
    Publication statusPublished - 1982

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