The behaviour of uranium-233 oxide and uranyl-233 nitrate in rats

John Cooper*, G. Neil Stradling, Hylton Smith, Sandra E. Ham

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    56 Citations (Scopus)


    233UO2 and 233UO2(NO3)2 in aqueous suspension have been administered to rats by pulmonary intubation. The 233U associated with the fraction of the 233UO2 less than 4 nm in diameter translocates from lungs to blood at the same rapid rate as 233U from 233UO2 (NO3)2. Identical reactions with blood plasma and lung fluid were observed whether the 233U was administered as <4nm 233UO2 particles or 233UO2(NO3)2. It is suggested that oxidation of UO2 to UO3 occurs followed by the formation of uranyl ion. In blood plasma, approximately 50 per cent of the 233U is bound to transferrin, 25 per cent to citrate and 25 per cent on bicarbonate.

    Original languageEnglish
    Pages (from-to)421-433
    Number of pages13
    JournalInternational Journal of Radiation Biology
    Issue number4
    Publication statusPublished - 1982


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