Elimination of Sodium-24 and Potassium-42 Interferences in Activation Analysis of Biological Samples

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Science  02 Jan 1970:
Vol. 167, Issue 3914, pp. 52-54
DOI: 10.1126/science.167.3914.52


We have developed a simple novel column technique for the removal of sodium-24 and potassium-42 based on a heterogeneous isotopic exchange reaction between an organic eluting solution (acetone-hydrochloric acid) and fine crystals of sodium chloride or potassium chloride or their analogs. The technique is fast, efficient, and highly selective; it has been successfully applied to irradiated human tissues prior to gamma-ray spectrometry with lithium-drifted germanium detectors.

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