Skip to Main content Skip to Navigation
Conference papers

Accurate and precise $^{235}$U quantification by combining isotopic dilution method and ICP/AES measurements

Abstract : An ICP/AES owning a high resolving power is able to measure the isotopic shift in emission atomic lines for heavy elements such as uranium. Uranium isotopes, such $^{235}$U and $^{238}$U, are therefore clearly separated and identified. Using this phenomenon, the accurate and precise quantification of uranium or its isotopes is possible. Indeed, the transposition of isotopic dilution mass spectrometry method to our ICP/AES instrument allows to quantify, with trueness and precision, the amount content of $^{235}$U of an uranyl nitrate solution. The method is named IDAES. At our knowledge, this study is the first that combine isotope dilution method and ICP/AES measurements. In order to demonstrate the validity of the IDAES method, an IDMS protocol (the preferred method), using a MC ICP/MS instrument, is also applied to determine the amount content of $^{235}$U of the sample. Both methods led to the same amount content of $^{235}$U for the uranyl nitrate solution (difference between both values is less than 0.1%). As expected, the precision of the IDMS method (less than 1%) is better than the IDAES one (about 3%) but it remains satisfactory. Those results are particularly remarkable since IDAES and IDMS used physically different measuring systems, respectively ICP/AES and MC ICP/MS.
Complete list of metadatas

https://hal-cea.archives-ouvertes.fr/cea-02509171
Contributor : Amplexor Amplexor <>
Submitted on : Monday, March 16, 2020 - 3:10:50 PM
Last modification on : Tuesday, April 28, 2020 - 11:28:18 AM
Long-term archiving on: : Wednesday, June 17, 2020 - 2:40:31 PM

File

201500001043.pdf
Files produced by the author(s)

Identifiers

Collections

CEA | DEN

Citation

O. Vigneau, N. Arnal. Accurate and precise $^{235}$U quantification by combining isotopic dilution method and ICP/AES measurements. MARC 10 - The Tenth International Conference on Methods and applications of radioanalytical chemistry, Apr 2015, Kailua-Kona, United States. ⟨10.1007/s10967-015-4366-0⟩. ⟨cea-02509171⟩

Share

Metrics

Record views

20

Files downloads

46