The capabilities of reactor neutron and 12 MeV proton activation were evaluted on samples of orchard leaves, beef liver and
bovine liver. Based on γ-ray spectrometry, As, Ca, Cu, Fe, Mo, Pb, Sr, Ti, Zn and Zr at levels ranging from 2 to 20 900 ppm
were detected following proton activation of 1 hour. Al, Br, Ca, Cl, Cu, Mg, Mn, Rb and V (ranging from 0.4 to 20 900 ppm)
were measured by neutron activation (1 min irradiation). As, Ba, Br, Cr, Co, Fe, Hg, La, Na, Rb, Sb and Zn (ranging from 0.2
to 2400 ppm) were determined following a 14 h neutron irradiation. Although covering different elements, the two techniques
are comparable in their scope, i. e. detection limits that can be achieved and number of elements that can be detected simultaneously.