Determination of plutonium in environmental samples by controlled valence in aniion exchange

@article{Chen1993DeterminationOP,
  title={Determination of plutonium in environmental samples by controlled valence in aniion exchange},
  author={Q. J. Chen and Asker Aarkrog and Sven Poul Nielsen and Henning Dahlgaard and H. Nies and Yu. Yixua and K. Mandrup},
  journal={Journal of Radioanalytical and Nuclear Chemistry},
  year={1993},
  volume={172},
  pages={281-288}
}
The title method was successfully used for collecting239,249Pu from 200 litres of seawater by coprecipitation with 16 g FeSO4·7H2O under redcing conditions witout filtering. The plutonium is leached by concentrate HNO3+HCl from the coprecipitate and the solid particles. The precipitate is heated at 400°C and digested in aqua regia. Na2SO3 and NaNO2 have been applied to obtain the Pu4+ valence state in 0.5–1N HNO3 for different samples. Plutonium and thorium are coadsorbed on anionic resin from… CONTINUE READING