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Ion-exchange separation of uranium,thorium and plutonium isotopes from environmental samples

Authors:	M Radenkovic D Vukovic V Sipka D Todorovic

Institution:	(1) Radiation and Environmental Protection Department, Institute of Nuclear Sciences Vina, P.O. Box 522, YU-11001 Belgrade, Yugoslavia;(2) Veterinary and Dairy Research Institute, YU-11001 Belgrade, Yugoslavia

Abstract:	Radioisotopes of uranium, thorium and plutonium in water, soil and fertilizer samples, have been chemically separated and determined by alpha-spectrometry method. Radiochemical procedure involving ion-exchange, enabled to determine these isotopes in very low concentrations (under 50 Bq/g).²³²U,²²⁹Th and²³⁸Pu were used as a tracers for radiochemical yield recoveries (up to 90%). Thin layer sources have been obtained by electrodeposition.

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