%0 Article
%T Trace element analysis of sound and decayed Norway spruce (Picea abies) by XRF and NAA methods.
%A Raunemaa, T.
%A Hautojärvi, A.
%A Jartti, P.
%A Laurén, J.
%A Lindfors, V.
%A Räisänen, J.
%D 1979
%J Silva Fennica
%V 13
%N 1
%R doi:10.14214/sf.a14871
%U https://silvafennica.fi/article/5017
%X <p>Ashed tree samples from sound and decayed Norway spruce (<em>Picea abies</em> (L.) H. Karst.) were studied by means of fast neutron activation analysis, and for comparison, also by X-ray fluorescence analysis. In fast neutron activation analysis, the following elements were detected: (Na), Mg, Al, Si, K, Ca, Mn, Rb, Sr and Ba, and according to the results of the X-ray fluorescence method the elements present in the wood samples were: K, Ca, Mn, Rb, Sr and Ba. A general diminishing was revealed by both methods in most elemental concentrations studied, with exception of K and Rb, when going from a sound tree to a decayed one. The use of the ratio of the amounts of potassium to calcium as an indication of the degree of decay is therefore proposed.</p>
<p>The PDF includes a summary in Finnish.</p>