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  • 1 Kuoto University Research Reactor Institute Kumatori-cho, Sennan-gun 590-04 Osaka Japan
  • | 2 Kyushu University Graduate School of Comparative Society and Culture 810 Fukuoka Japan
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Instrumental neutron activation analysis was applied to 61 ivory samples of which origin countries are known. 12 elements such as Br, Ca, Cl, Co, Cs, Fe, Mg, Mn, Na, Sc, Sr and Zn, were determined in all samples. The factor score of each sample was calculated for each factor by making use of principal component analysis in order to determine their origins. The results were compared with those by stable isotope analysis (13C and15N).