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Some observations on the geochemistry and isotopic composition of uranium in relation to the reprocessing of nuclear fuels
Hamilton, E.I.; Stevens, H.E. (1985). Some observations on the geochemistry and isotopic composition of uranium in relation to the reprocessing of nuclear fuels. J. Environ. Radioactivity 2(1): 23-40
In: Journal of Environmental Radioactivity. Elsevier Science Publishing: Barking. ISSN 0265-931X, more
Peer reviewed article  

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  • Hamilton, E.I.
  • Stevens, H.E.

Abstract
    In order to determine whether or not uranium depleted in 235U and derived from the British Nuclear Fuels Ltd (BNFL) nuclear fuel reprocessingg plant at Sellafield, Cumbria, UK can be detected in environmental samples, we have investigated the isotopic composition of uranium in ammonium carbonate leachates from marine and terrestial samples from near Sellafield. Some show a depletion in 235U and the presence of 236U which unequivocally identifies the presence of uranium derived from BNFL. The 234U/238U activity ratio and total uranium content of samples are not significantly different from those of natural uranium abundances. The highest concentrations of uranium are found in anaerobic organic-rich silts and the lowest in sandy silts and coarse-grained sands.

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