Separation and Determination of Transplutonium Elements

The transplutonium elements (TPE) apportionment in a separate group of actinide series is conditioned by several reasons. In chemical relation TPE strongly differ from light actinides by the stability of +3 oxidation state in aqueous solutions 1, 2 and demonstrate a considerable likeness with the elements of the first half of lanthanide series. 3 The half-lives of the most available TPE isotopes are considerably smaller than those of light actinides and the great radioactivity of TPE solutions arouses specific troubles at chemical processes. At last, from the point of practicality, using scale TPE for the present is inferior to light actinides and consequently (and also because of their smaller availability) their chemical properties are studied much less, than, e.g., those of uranium and Plutonium.