Substoichiometric separation using ion-association extraction systems |
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| Affiliation: | 1. Department of Solid Earth Geochemistry, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka 237-0061, Japan;2. Isotope Geochemistry Group, Kochi Institute for Core Sample Research, JAMSTEC, 200 Monobe Otsu, Nankoku City, Kochi 783-8502, Japan;3. Resource Generation Environment Research Group, Research and Development (R&D) Center for Submarine Resources, JAMSTEC, 2-15 Natsushima-cho, Yokosuka 237-0061, Japan |
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| Abstract: | A theory of ion-association extraction using tetraphenyl-arsonium, triphenylsulphonium and tetraphenylphosphonium ions is given, from which these reagents are shown to be suitable for selective substoichiometric separations. From these considerations it follows that the substoichiometric determination of manganese, rhenium and iodine by activation analysis should be possible; however, the use of these reagents for isotope dilution seems to be doubtful. |
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