Analyse polarographique des solutions d'attaque des combustibles des réacteurs à neutrons rapides,dosage du plutonium: |en|Polarographic determination of plutonium in dissolution products from fast neutron reactor fuels

Polarographic determination of plutonium in dissolution products from fast neutron reactor fuelsDifferential pulse polarography is applied to plutonium determinations in the presence of uranium, in nitric acid solutions from nuclear fuels. Several complexing agents for plutonium(IV) were tested, and a pyrophosphate medium at pH 2.5 was finally selected. The precision is about 1% provided that the U/Pu ratio is less than 5 ; under these conditions, the method does not require a preliminary separation of uranium.