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Anionenwirkung auf CaNa-Gleichgewichte an Kationenaustauschern. 9. Mitteilung über Ionenaustauscher

✍ Scribed by H. Deuel; K. Hutschneker; E. Stutz; J. C. Frederiks


Publisher
John Wiley and Sons
Year
1957
Tongue
German
Weight
382 KB
Volume
40
Category
Article
ISSN
0018-019X

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✦ Synopsis


Abstract

Ca^2+^Na^+^ exchange equilibria between Dowex 50 or cross‐linked pectic acid as cation exchangers and external solutions with different anions have been measured. The Ca^2+^selectivity of the exchangers is decreased by the anions in the following order: acetate, β‐indolyl acetate, citrate. Under not to acidic conditions ethylenediamine tetraacetate removes more Ca^2+^ from the exchanger than the other anions. S‐shaped equilibrium curves are obtained with ethylenediamine tetraacetate, showing the bifunctionality of this anion towards Ca^2+^.


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