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  • 1 Musashi Institute of Technology Atomic Energy Research Laboratory 971 Ozenji, Asaoku 215 Kawasakishi, Kanagawa (Japan)
  • 2 Department of Chemistry 7-1 Kioicho, Chiyodaku 102 Tokyo Sophia University (Japan)
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Abstract  

Previously undetermined three rare earth elements (REE's), Pr, Nd and Er, in acidic hot spring and crater lake waters were determined at ppb levels by neutron actavation analysis with the standard addition technique. Errors on final detemined values were 7.1–56%. Combining the present results and the results previously obtained amounts to the determination of all 14 naturally occuring REE's in the waters.