DOI: 10.7795/720.20260121
title: Additional data for the deliverable "D6: Inter-laboratory comparison report, describing sample preparation requirements, sample introduction methods, and uncertainty budgets"

description: This dataset describes the results of two interlaboratory comparisons using two reference materials (RM), a spiked natural seawater and a spiked synthetic sand. The measurands selected were the mass fraction of 238U, 239Pu, 241Am and 237Np, and the 234/238U, 235/238U, 236/238U and 239/240Pu isotope ratios. The liquid comparison involved 11 participants, who produced a total of 83 results. The solid comparison involved 11 participants who produced a total of 79 results. This dataset presents the assigned values for each measurand, the results of the participants and their analysis following statistical criteria.
description: <strong>Description of the individual files:</strong>
Table 6. Results obtained for the mass fraction of 234U and performance statistics – liquid RM.
Table 7. Results obtained for the mass fraction of 235U and performance statistics – liquid RM.
Table 8. Results obtained for the mass fraction of 236U and performance statistics – liquid RM.
Table 9. Results obtained for the mass fraction of 237Np and performance statistics – liquid RM.
Table 10. Results obtained for the mass fraction of 238U and performance statistics – liquid RM.
Table 11. Results obtained for the mass fraction of 239Pu and performance statistics – liquid RM.
Table 12. Results obtained for the mass fraction of 240Pu and performance statistics – liquid RM.
Table 13. Results obtained for the mass fraction of 241Am and performance statistics – liquid RM. 
Table 14. Results obtained for the 239Pu + 240Pu mass activity and performance statistics – liquid RM.
Table 15. Results obtained for the total U content and performance statistics – liquid RM.
Table 16. Results obtained for the 234U/238U isotope ratio and performance statistics – liquid RM.
Table 17. Results obtained for the 235U/238U isotope ratio and performance statistics – liquid RM.
Table 18. Results obtained for the 236U/238U isotope ratio and performance statistics – liquid RM.
Table 19. Results obtained for the 240Pu/239Pu isotope ratio and performance statistics – liquid RM.

Table 25. Results obtained for the mass fraction of 234U and performance statistics – solid RM.
Table 26. Results obtained for the mass fraction of 235U and performance statistics – solid RM.
Table 27. Results obtained for the mass fraction of 236U and performance statistics – solid RM.
Table 28. Results obtained for the mass fraction of 237Np and performance statistics – solid RM.
Table 29. Results obtained for the mass fraction of 238U and performance statistics – solid RM.
Table 30. Results obtained for the mass fraction of 239Pu and performance statistics – solid RM.
Table 31. Results obtained for the mass fraction of 240Pu and performance statistics – solid RM.
Table 32. Results obtained for the mass fraction of 241Am and performance statistics – solid RM. 
Table 33. Results obtained for the 239Pu + 240Pu mass activity and performance statistics – solid RM.
Table 34. Results obtained for the total U content and performance statistics – solid RM.
Table 35. Results obtained for the 234U/238U isotope ratio and performance statistics – solid RM.
Table 36. Results obtained for the 235U/238U isotope ratio and performance statistics – solid RM.
Table 37. Results obtained for the 236U/238U isotope ratio and performance statistics – solid RM.
Table 38. Results obtained for the 240Pu/239Pu isotope ratio and performance statistics – solid RM.



<strong>Common Information:</strong>
* Research object = Single and mixed radionuclide standard solutions.
* Method = Decay counting and mass spectrometric techniques.
* Format = XLSX, TSV (tab separated)
* Recommended software = Excel, LibreOffice, OnlyOffice
* Variables =
+ Mass fraction in mg/g
+Activity in Bq/g
+ Total U content in mg/g
+ Isotope Ratios in mol/mol
+ 1st criterion,
+ 2nd criterion,
+ Score
(Hint: The two criteria and the score are described in Appendix 6 of the D6 report)
description: The project 21GRD09 MetroPOEM has received funding from the European Partnership on Metrology, co-financed from the European Union’s Horizon Europe Research and Innovation Programme and by the Participating States.