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Letters to Nature

Nature 171, 742-743 (25 April 1953) | doi:10.1038/171742b0

Ionium Determination in Deep-Sea Sediments

N. ISAAC & E. PICCIOTTO

  1. Centre de Physique Nucléaire, 1'Université libre de Bruxelles. Jan. 14.
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MEASUREMENTS carried out in the Oceanographical Institute, Göteborg, on the radium content in deep-sea cores by H. Pettersson, Traude Bernert, V. Kröll1 et al. showed the vertical distribution of radium to be highly complicated. We were therefore asked to develop a method for direct measurement of the ionium content in samples of sediment from the Swedish Deep-Sea Expedition.