白金試料皿のPu²³⁹汚染の除去

抄録

In order to reuse Pt plates which are soiled by ²³⁹Pu on the counting sample preparation, the decontamination experiments have been carried out with washing and immersion process.
Results obtained show that water washing has not any effect but diluted HCl and HNO₃ washing have fair effects for removal of ²³⁹Pu from Pt plates in the cause of an ion exchange reaction. It is also found that ²³⁹Pu decontaminabilities of these acids are increased with increasing of their acidifies.
The conclusion is that one of the most excellent decontamination processes of ²³⁹Pu may be a long period (more than one day) immersion in concentrated HCl without corrosion of Pt plates.