1971 Volume 20 Issue 7 Pages 305-309
In the determination by activation analysis of rare earth elements contained in river and sea water, a simple chemical group separation made it possible to determine La, Ce, Sm, Eu, Tb, Dy, Tm, Yb and Lu by γ-ray spectrometry using a Ge (Li) detector. The contents of these rare earth elements in sea water of Tokyo Bay and in T ama River which flows through Tokyo City into the bay were determined by the above-mentioned method.
The distribution pattern of these rare earth elements expressed by chondrite normalized pattern for the sample waters showed that there is characteristic difference in the pattern between river and sea water. And when these patterns are compared with that of ocean water, the pattern of sea water has intermediate characteristics between those of river and ocean water.