Isotopieeffekte in der Grenzschicht anorganischer Lösungen / Isotope Effects at the Surface of Inorganic Solutions
Open Access
- 1 August 1975
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 30 (7-8) , 497-502
- https://doi.org/10.1515/znb-1975-7-806
Abstract
Isotope effects were investigated at the surface of aqueous lithium and calcium salt solutions. The dependence on the temperature in the gas phase was determined. The surfaces of the solutions were isolated by spray experiments. In the case of calcium salt solutions an enrichment of the lighter isotope 40Ca in relation to the heavier isotopes 44Ca and 48Ca was found at the solution surface. The experiments with lithium fluoride and lithium iodide gave inverse isotope effects. The calcium isotope effect could be qualitatively explained by the Gibbs theorem. The isotope separation of lithium possibly can be referred to the more covalent bonding character than the ionic one of lithium compounds at the solution surface.Keywords
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