Thick-Target PIXE Analysis of Trace Elements in Wood Incoming to a Pulp Mill

K-E Saarela, L. Harju, Jan-Olof Lill, Johan Rajander, Alf Lindroos, Sven-Johan Heselius, K. Saari

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    Abstract

    Trunk-wood samples of wood raw material incoming to a pulp mill were analysed by thick-target particle induced X-ray emission (PIXE). The tree species studied were pine and spruce from Finland. birch from Finland and Poland and eucalyptus from Uruguay. The wood samples were dry ashed to 550degreesC prior to the analysis in order to increase the,sensitivity of the method. The method was calibrated and validated using, some wood based certified reference materials. The elements determined with the method were P. S. K. Ca. Ti. Mn. Fe. Ni, Zn, Pb, Sr, Rh, Ba and F. The concentrations of the main elements P. S. K. Ca and Mn exceeded 50 ppm in most wood samples, The concentrations of heavy metal ions like Cu, Ni and Pb in the studied were below or close to 1 ppm, The ash content of birch. pine and spruce wood were in the range 0.2-0.4% and that of eucalyptus ca 0.59%.
    Original languageUndefined/Unknown
    Pages (from-to)380–387
    Number of pages8
    JournalHolzforschung
    Volume56
    Issue number4
    Publication statusPublished - 2002
    MoE publication typeA1 Journal article-refereed

    Keywords

    • birch
    • dry ashing
    • eucalyptus
    • metal ions
    • pine
    • PIXE
    • Spruce
    • stem wood
    • trace elements

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