Several reindeer tissue samples were analysed for transuranium elements following the Chernobyl accident in 1986. Pu, Am and Cm were separated using coprecipitation and anion exchange steps, and measured with alpha spectrometry. The activity concentrations of Pu in reindeer liver found in this study (0.0094–0.062 Bq kg d.w. [= dry weight]) are low compared to the concentrations found in the 196...

We predict that plutonium hexaboride (PuB(6)) is a strongly correlated topological insulator, with Pu in an intermediate valence state of Pu(2.7+). Within the combination of dynamical mean field theory and density functional theory, we show that PuB(6) is an insulator in the bulk, with nontrivial Z(2) topological invariants. Its metallic surface states have a large Fermi pocket at the X[over ¯]...

The strong influence of the structure amide derivatives on plutonium extraction properties is rationalized from DFT calculations.