Uranium isotopic ratio determination in urine using flow-injection ICP-MS: a tool for emergency monitoring.
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.
Godoy
Maria Luiza D P
ML
Instituto de Radioproteção e Dosimetria, Comissão Nacional de Energia Nuclear, Av. Salvador Allende s/n, CEP 22780-160 Rio de Janeiro, RJ, Brazil.
Julião
Ligia M Q C
LM
Godoy
José Marcus
JM
D000059:Accidents; D004630:Emergencies; D017022:Flow Injection Analysis; D006801:Humans; D013058:Mass Spectrometry; D009688:Nuclear Reactors; D016273:Occupational Exposure / Q000032:analysis*; D011834:Radiation Monitoring; D014501:Uranium / Q000652:urine*; D016482:Urinalysis
D014501:Uranium