We are doing science for policy
The Joint Research Centre (JRC) is the European Commission's science and knowledge service which employs scientists to carry out research in order to provide independent scientific advice and support to EU policy.
The JRC-IRMM is currently replacing some of its exhausted stocks of certified reference materials with new ones whose specifications are up-to-date and tailored for the demands of modern analytical techniques.
A new mixed spike Isotopic Reference Material of highly enriched uranium‑233 and plutonium-242 has been prepared and certified for plutonium isotope amount content and isotopic composition. It is applied for Isotope Dilution Mass Spectrometry (IDMS) in nuclear fuel cycle measurements.
The IRMM-046c is supplied in a glass ampoule with screw cap seals containing about 10 mL of plutonium and uranium in 5 mol•L-1 nitric acid. Each unit contains about 10 mg uranium with a relative mass fraction m(233U)/m(U) of 99.8 % and about 1 mg plutonium with a relative mass fraction m(242Pu)/m(Pu) of 94.7 %. The certified values were established by Isotope Dilution Thermal Ionisation Mass Spectrometry (ID-TIMS) and Thermal Ionisation Mass Spectrometry (TIMS).
IRMM-046c was certified in the scope of the on-going inter-calibration campaign inter-linking selected JRC-IRMM plutonium spikes on a metrological basis applying state-of-the art measurement procedures.
Read more in:
R. Jakopič et al., An inter-calibration campaign using various selected Pu spike isotopic reference materials, Journal of Radioanalytical and Nuclear Chemistry. November 2010, Volume 286, Issue 2, pp449-454