## Abstract Ion‐exchange equilibria measurements were made on soluble polystyrene sulfonic acids and polyacrylic acids of different exchange capacities. The exchange of Li^+^, Na^+^, Ca^++^, Ba^++^, and H^+^ against NH~4~^+^ was measured with the dialysis method. The results obtained are similar to
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
No coin nor oath required. For personal study only.
✦ 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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