Actinide analysis in urine during participating PROCORAD intercomparison

The National Institutes for Quantum Science and Technology (QST), Japan, has been engaged in international comparisons organized by the French organization PROCORAD (Association for the PROmotion of Quality Control in RADiotoxicological Analysis) since 2016. To improve the quality control of urinary bioassay for actinides, we developed and modified radiometric and mass spectrometric methods, and improved lab manuals and lab specifications, during PROCORAD comparisons. Based on the performance criteria including Z-score, bias, and En value, our lab qualified as TOP LABO for these comparisons: DTPA-actinides urine (2022), Actinides in urine (2023), and DTPA-actinides urine (2023).