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  • 1 Faculté des Sciences Laboratoire de Radiochimie 28 Avenue de Valrose 06108 Nice Cédex 2 France
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A radiochemical separation is presented for americium, plutonium and neptunium from sediment samples by using an unique anionic exchange process. An oxidation-reduction step was introduced in the classical procedure of the radiochemical determination of transuranic elements in order to control the valence of the separated elements.