Abstract
Instrumental neutron activation analysis technique (INAA) was applied for nondestructive multi-element analysis of seed samples of the
plant
hopseed. This plant is distributed all over Egypt, because of its suitable properties. The samples were
collected from some bushes grown at different sites in some governorates, in July of each year during the period from 2004 to 2011. The
determined elements are: Co, Cs, Eu, Fe, Hg, Ni, Rb, Sc, Se, Sr
and Zn, under the chosen irradiation and cooling times. The content of some elements has been compared with data obtained from
previous work on analysis of various kinds of seeds. The influence of some parameters on the determined elemental content is
discussed. Standard reference materials IAEA-155 and IAEA-V-10 were used to assure quality control, accuracy and precision of the
technique.