Determination of Natural and Depleted Uranium in Urine at the ppt Level


  1. D'Agostino, P.A.
  2. Ough, E.A.
  3. Glover, S.E.
  4. Vallerand, A.L.
Corporate Authors
Defence R&D Canada - Suffield, Ralston ALTA (CAN);Royal Military Coll of Canada, Kingston ONT (CAN);Los Alamos National Lab, Los Alamos NM (US)
An analytical exercise was initiated in order to determine those analytical procedures with the capacity to measure uranium isotope ratios (238U/2135U) in urine samples containing less that 1 mu g uranium/L urine. Host laboratory was tasked with the preparation of six sets (12 samples per set) of synthetic urine samples spiked with varying amounts of natural and depleted (0.2% 235U) uranium. The sets of samples contained total uranium in the range 25 ng U/L urine to 770 ng U/L urine, with isotope ratios (238U/235U) from 137.9 (natural uranium) to 215 (difference 50% depleted uranium). Sets of samples were shipped to five testing laboratories (four Canadian and one European) for total and isotopic assay. The techniques employed in the analyses included sector field inductively coupled plasma mass spectrometry (ICP-SF-MS), quadrupole inductively coupled plasma mass spectrometry (ICP-Q-MS), thermal ionization mass spectrometry (TIMS) and neutron activation analysis (NAA). Full results were obtained from three testing labs (ICP-SF-MS, ICP-Q-MS and TIMS). Their results, plus partial results from the NAA lab, have been included in this report. TRUNCATED

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Analytical exercise;Urine;Depleted uranium;Neutron activation
Report Number
DRDC-SUFFIELD-TR-2002-024 — Technical Report
Date of publication
01 Oct 2002
Number of Pages
Hardcopy;Document Image stored on Optical Disk

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