Journal Article

Complexation Ion-exchange Chromatography of Some Metal Ions on Papers Impregnated with Ti(IV)-Based Inorganic Ion Exchangers

S.D. Sharma and R. Gupta

in Journal of Chromatographic Science

Volume 38, issue 2, pages 61-66
Published in print February 2000 | ISSN: 0021-9665
Published online February 2000 | e-ISSN: 1945-239X | DOI: http://dx.doi.org/10.1093/chromsci/38.2.61
Complexation Ion-exchange Chromatography of Some Metal Ions on Papers Impregnated with Ti(IV)-Based Inorganic Ion Exchangers

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The chromatographic behavior of 40 metal ions is studied on titanium (IV) arsenate, titanium(IV) phosphate-, titanium (IV) molybdate-, titanium(IV) tungstate-, and titanium(IV) selenite-impregnated papers in 0.1 ? oxalic, citric, and tartaric acid as mobile phases. Similar studies are carried out on Whatman No. 1 papers for comparison. The ion-exchange capacity of these papers is determined, and their selectivity for different cations is discussed. The mechanism of migration is explained in terms of ion-exchange, precipitation, and adsorption. The prediction of elution sequence from RF values is also checked. The average Ri is found to be almost linearly dependent on the charge of the metal ions. The effect of the pKa of complexing acids on average RF values of 3d series metal ions is explained. A number of binary and ternary separations are achieved.

Journal Article.  0 words. 

Subjects: Chemistry

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