Abstract
EXPERIMENTS involving the use of radioactive phosphorus (phosphorus-32) incorporated into nucleo-proteins have indicated that samples of nominally carrier-free radioactive orthophosphate contained, at various times during 1950, an appreciable proportion of activity associated with particulate matter. Recent samples of phosphorus-32 have, however, been free from this impurity. This impurity is of serious consequence when measurements of the radioactivity of proteins labelled with phosphorus-32 are to be made, as the impurity is carried down on protein precipitates, where it remains in spite of repeated washing.
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HOTCHIN, J. A Particulate Impurity Found in Solutions of Radioactive Phosphorus. Nature 168, 200 (1951). https://doi.org/10.1038/168200a0
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DOI: https://doi.org/10.1038/168200a0
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