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Ion-exchange studies of solutions of tellurates

1958; Pergamon Press; Volume: 6; Issue: 2 Linguagem: Inglês

10.1016/0022-1902(58)80061-5

1878-1225

D. A. Everest, Wojciech J. Popiel,

Field-Flow Fractionation Techniques

The sorption of tellurium and of chloride by Amberlite I.R.A. 400-Cl from telluric acid solutions, containing 1·0-0·07 g atoms of tellurium per litre, has been studied at various pH values. The results have been interpreted in terms of the sorption of a tetra- and a tri-tellurate ion, in addition to the non-condensed ions H5TeO6− and H4TeO6=. The actual ions sorbed appear to depend both upon the pH and the tellurium concentration of the solutions. An attempt was made to correlate the data obtained by ion-exchange methods with those supplied by an examination of the ultra-violet absorption spectra of telluric acid and sodium tellurate solutions.