Abstract
CONVENTIONAL methods of beta-ray measurement for checking the activity of a pure beta-emitter such as phosphorus-32, in therapeutic amounts, have the following disadvantages: (1) The container must be opened, and the sterility of the solutions sent out in sealed ampoules from Harwell) or in sealed screw-cap bottles (from the Atomic Energy Commission, U.S.A.) is thus interfered with. (2) Careful aliquots and high dilutions must be made, or careful evaporation procedures must be followed. In any event some handling of potentially dangerous material is involved. (3) These rather tedious procedures must be repeated if carrier-free material is to be subdivided. The activity of the subdivided amounts should be checked, as it is not possible to predict the loss by adsorption on the walls of the original container.
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Harwell List of Radioactive Isotopes, §6.
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ALPER, T., DU PREEZ, L. Use of Bremsstrahlung in Making Rapid Assays of Millicurie Amounts of Phosphorus-32. Nature 164, 1001 (1949). https://doi.org/10.1038/1641001a0
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DOI: https://doi.org/10.1038/1641001a0
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