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Science 2 January 1970:
Vol. 167. no. 3914, pp. 52 - 54
DOI: 10.1126/science.167.3914.52
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Articles

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

Chung-Wai Tang 1 and Constantine J. Maletskos 1

1 Cancer Research Institute, New England Deaconess Hospital, and Department of Pathology, Harvard Medical School, Boston, Massachusetts 02215

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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Science. ISSN 0036-8075 (print), 1095-9203 (online)