DETERMINATION OF TRACE-ELEMENTS IN NA-BENTONITIC CLAY BY INAA IN TURKEY

Instrumental neutron activation analysis was applied to the determinat ion of trace elements in a Na-bentonitic clay. The irradiation was don e in the Triga Mark II type reactor of ITU Nuclear Energy Institute. T he sample was irradiated in two steps for ''short-'' and ''long-''live d isotopes. After irradiation, spectra were taken using a germanium de tector, multichannel analyzer Canberra System 100 and a fitting progra m called Sampo 90. The spectra of short-lived isotopes were analyzed t o determine Al, Mg,Na, K, Ca, Ti elements and Mn, V trace elements. Th e spectra of long-lived isotopes were analyzed to determine Sc, Br, Sb , Cs, La, Ce, Sm, Yb, Hf, Pa, Np trace elements.