The determination of uranium in biological materials by neutron activation analysis using the fission product134I |
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Authors: | J H Augustson J W Haynes T W Sanders |
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Affiliation: | (1) Environmental and Medical Sciences Division AERE, OX 11 ORA Harwell, Oxfordshire, (England);(2) Present address: Norwegian Defence Research Establishment, P.O. Box 25, N-2007 Kjeller, Norway |
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Abstract: | A method for the determination of uranium based on235U thermal neutron fission, has been developed and employed on samples of ashed fish tissue and seaweed. The method involves
a post-irradiation ion exchange separation of iodine isotopes. The 884 keV photopeak of134I is used for measurement. Uranium detection limits in the samples concerned have been estimated to be 1·10−8g in terms of natural uranium. The precision achieved in analysing several series of 3–5 samples was 4–10 per cent. The accuracy
of the method was tested by employing an independent neutron activation procedure based on239U measurement. The accuracy of both methods was checked by analysing NBS SRM 1571 ‘Orchard Leaves’. |
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