Method validation for the analysis of uranium particles in environmental samples using secondary ion mass spectrometry for safeguards purpose

Abstract

This paper reports the results of a validation process for particle analysis of environmental samples for nuclear safeguards using small geometry-secondary ion mass spectrometry. An analytical method was established for particle recovery, particle search, and uranium isotope analysis. Test samples containing uranium and sediment materials were analyzed using the method, and two groups of particles containing low-enriched uranium with U-235 contents in proximity were resolved. The method was validated for environmental analysis using a set of field samples. The results were consistent with previously reported values. The validated method will contribute to the pursuit of global nuclear non-proliferation.