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  • Title: Uranium isotopic ratio determination in urine using flow-injection ICP-MS: a tool for emergency monitoring.
    Author: Godoy ML, Julião LM, Godoy JM.
    Journal: Radiat Prot Dosimetry; 2009 Feb; 133(4):234-9. PubMed ID: 19297532.
    Abstract:
    An inductively coupled plasma mass spectrometry-based method is presented aimed at total uranium concentration and atomic ratio determination. The method includes flow-injection uranium separation based on TRU Eichrom extraction chromatographic cartridges. The method was tested with urine interlaboratorial exercise samples and certified reference materials (NBL-CRM-U020A and NBL-CRM-U050) providing reliable results. The proposed methodology was also applied to urine samples obtained after an incident at a nuclear facility. The obtained (235)U/(238)U and (234)U/(238)U atomic ratios in the urine of an exposed worker were equal to those observed for an enriched uranium solution from the same origin.
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