Summary
The calculation of fraction exchange is given for the case when the composition of the system changes during the heterogeneous exchange experiment.
In order to avoid essentially wrong conclusions, the change of specific activity of the liquid phase originating from heterogeneous exchange ought to be distinguished from the change originating from any other simultaneous process.
Two cases were considered: I. an inactive solid phase dissolving during the experiment, the liquid phase being previously labelled, and II. the solid phase formed during the experiment from exchangeable substance previously labelled in the liquid phase.
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References
Wahl, A. C. andN. A. Bonner, Radioactivity Applied to Chemistry (New York, London, 1951).
Wolf, R. H. H., M. Mirnik, andB. Težak, Kolloid-Z. u. Z. Polymere205, 111 (1965).
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Contribution number 114 from the Department of Physical Chemistry, Faculty of Sciences, University of Zagreb.
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Wolf, R.H.H. Heterogeneous exchange of precipitates. Kolloid-Z.u.Z.Polymere 205, 120–121 (1965). https://doi.org/10.1007/BF01507975
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DOI: https://doi.org/10.1007/BF01507975