Summary
The heterogeneous exchange of ferric ion between a labelled aqueous ferric chloride solution and the colloidalβ-FeOOH, prepared by slow hydrolysis of a ferric chloride solution at 100 °C, was investigated at room temperature.
Contrary to previously described ferric (hydr)oxides, originating from freshly formed “amorphous” precipitate, theβ-FeOOH showed no exchange. This was attributed to a well ordered crystal lattice related to the slow formation of the solid phase.
The radioactive nuclide54Mn, present without isotopic carrier in the labelling59FeCl3 solution and introduced into the liquid phase, remained in the liquid phase.
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Contribution number 113 from the Department of Physical Chemistry, Faculty of Sciences, University of Zagreb.
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Wolf, R.H.H., Mirnik, M. & Težak, B. Heterogeneous exchange of precipitates. Kolloid-Z.u.Z.Polymere 205, 118–119 (1965). https://doi.org/10.1007/BF01507974
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DOI: https://doi.org/10.1007/BF01507974