Colloids and Surfaces A-physicochemical and Engineering Aspects, 2008
A new inorganic cation exchanger titanium(IV) molybdosilicate has been synthesized. The effect of... more A new inorganic cation exchanger titanium(IV) molybdosilicate has been synthesized. The effect of experimental parameters such as mixing ratio of reagents, temperature, and pH on the properties of material has been studied. The material was characterized on the basis of chemical ...
... Titre du document / Document title. Synthesis, ion-exchange properties, and analytical applic... more ... Titre du document / Document title. Synthesis, ion-exchange properties, and analytical applications of anilinium tin(IV) phosphate. Auteur(s) / Author(s). DHRUV KUMAR SINGH (1) ; ANJANA DARBARI ; Affiliation(s) du ou des auteurs / Author(s) Affiliation(s). ...
The adsorption behavior of a thermally and chemically stable hybrid ion-exchange material, acryla... more The adsorption behavior of a thermally and chemically stable hybrid ion-exchange material, acrylamide aluminum tungstate was explored in cationic (CTAB) and anionic (SDS) surfactants and acidic solvents. Critical micellar concentration (CMC) appears to be an important parameter in determining the adsorption behavior of metal ions. Equilibration time and temperature studies on the distribution coefficient of metal ions were studied. On the basis of the distribution coefficient, this material was successfully used for quantitative separations of some binary synthetic mixtures of metal ions by the column method. Hg(II) ion was selectively determined quantitatively in synthetic mixture. The material appears to be promising for separating toxic metal ions in a real matrix (industrial effluents and waste water) and can be utilized as a packing material in HPLC and GC columns for faster and more efficient separation.
Cation exchange resin, Amberlite IR-120, has been modified by the sorption of 1-(2-pyridylazo)-2-... more Cation exchange resin, Amberlite IR-120, has been modified by the sorption of 1-(2-pyridylazo)-2-napthol (PAN) at pH 6.0. The optimum conditions for the sorption of PAN on the resin have been established. The maximum sorption of PAN was found to be 8.70 μmol/g. In order to explore the separation possibilities of the material, distribution coefficients of a number of metal ions were determined in various solvent systems. A number of binary separations of metal ions of analytical interest have been carried out using columns packed with this material. In order to demonstrate the practical utility of this material, Zn2+ and Hg2+ have been selectively separated from synthetic mixtures of metal ions and assay of Zn2+ and Fe2+ in commercially available pharmaceutical tablets; namely Fesofor-Z and FE-Z, was carried out.
Samples of zirconium(IV)iodotungstate have been synthesized under varying mixing order and ratios... more Samples of zirconium(IV)iodotungstate have been synthesized under varying mixing order and ratios of aqueous solution of potassium iodate, sodium tungstate and zirconium oxychloride at pH 1. A tentative formula was proposed on the basis of chemical composition, FTIR and thermogravimetric studies. The material shows a capacity of 0.68 meq g(-1) (for K+) which can be retained up to 200 degrees C. pH titration data reveal its monofunctional behavior. The distribution coefficient values of metal ions have been determined in various solvent systems. A number of important and analytically difficult quantitative separations of metal ions have been achieved using columns packed with this exchanger. In order to demonstrate practical utility of this material, Hg2+ and Pb2+ have been selectively separated and determined in the synthetic mixtures. Assay of Al3+ and Mg2+ in commercial tablets and analysis of lead in the standard reference material have also been attempted.
Colloids and Surfaces A-physicochemical and Engineering Aspects, 2006
Anion exchange resin Amberlite IR-400 has been modified with napthol blueblack. Effect of concen... more Anion exchange resin Amberlite IR-400 has been modified with napthol blueblack. Effect of concentration, time, pH and temperature on the sorption of dye has been studied. The uptake sequence of various metal ions in a number of solvents has been determined. On the ...
Abstract The adsorption of different metal ions on acrylamidezirconium (IV) arsenate has been stu... more Abstract The adsorption of different metal ions on acrylamidezirconium (IV) arsenate has been studied. The effect of surfactant concentration (Tween 80‐R and Tritron X‐100) on sorption of different metal ions acrylamidezirconium (IV) arsenate was explored. The effect ...
Colloids and Surfaces A-physicochemical and Engineering Aspects, 2008
A new inorganic cation exchanger titanium(IV) molybdosilicate has been synthesized. The effect of... more A new inorganic cation exchanger titanium(IV) molybdosilicate has been synthesized. The effect of experimental parameters such as mixing ratio of reagents, temperature, and pH on the properties of material has been studied. The material was characterized on the basis of chemical ...
... Titre du document / Document title. Synthesis, ion-exchange properties, and analytical applic... more ... Titre du document / Document title. Synthesis, ion-exchange properties, and analytical applications of anilinium tin(IV) phosphate. Auteur(s) / Author(s). DHRUV KUMAR SINGH (1) ; ANJANA DARBARI ; Affiliation(s) du ou des auteurs / Author(s) Affiliation(s). ...
The adsorption behavior of a thermally and chemically stable hybrid ion-exchange material, acryla... more The adsorption behavior of a thermally and chemically stable hybrid ion-exchange material, acrylamide aluminum tungstate was explored in cationic (CTAB) and anionic (SDS) surfactants and acidic solvents. Critical micellar concentration (CMC) appears to be an important parameter in determining the adsorption behavior of metal ions. Equilibration time and temperature studies on the distribution coefficient of metal ions were studied. On the basis of the distribution coefficient, this material was successfully used for quantitative separations of some binary synthetic mixtures of metal ions by the column method. Hg(II) ion was selectively determined quantitatively in synthetic mixture. The material appears to be promising for separating toxic metal ions in a real matrix (industrial effluents and waste water) and can be utilized as a packing material in HPLC and GC columns for faster and more efficient separation.
Cation exchange resin, Amberlite IR-120, has been modified by the sorption of 1-(2-pyridylazo)-2-... more Cation exchange resin, Amberlite IR-120, has been modified by the sorption of 1-(2-pyridylazo)-2-napthol (PAN) at pH 6.0. The optimum conditions for the sorption of PAN on the resin have been established. The maximum sorption of PAN was found to be 8.70 μmol/g. In order to explore the separation possibilities of the material, distribution coefficients of a number of metal ions were determined in various solvent systems. A number of binary separations of metal ions of analytical interest have been carried out using columns packed with this material. In order to demonstrate the practical utility of this material, Zn2+ and Hg2+ have been selectively separated from synthetic mixtures of metal ions and assay of Zn2+ and Fe2+ in commercially available pharmaceutical tablets; namely Fesofor-Z and FE-Z, was carried out.
Samples of zirconium(IV)iodotungstate have been synthesized under varying mixing order and ratios... more Samples of zirconium(IV)iodotungstate have been synthesized under varying mixing order and ratios of aqueous solution of potassium iodate, sodium tungstate and zirconium oxychloride at pH 1. A tentative formula was proposed on the basis of chemical composition, FTIR and thermogravimetric studies. The material shows a capacity of 0.68 meq g(-1) (for K+) which can be retained up to 200 degrees C. pH titration data reveal its monofunctional behavior. The distribution coefficient values of metal ions have been determined in various solvent systems. A number of important and analytically difficult quantitative separations of metal ions have been achieved using columns packed with this exchanger. In order to demonstrate practical utility of this material, Hg2+ and Pb2+ have been selectively separated and determined in the synthetic mixtures. Assay of Al3+ and Mg2+ in commercial tablets and analysis of lead in the standard reference material have also been attempted.
Colloids and Surfaces A-physicochemical and Engineering Aspects, 2006
Anion exchange resin Amberlite IR-400 has been modified with napthol blueblack. Effect of concen... more Anion exchange resin Amberlite IR-400 has been modified with napthol blueblack. Effect of concentration, time, pH and temperature on the sorption of dye has been studied. The uptake sequence of various metal ions in a number of solvents has been determined. On the ...
Abstract The adsorption of different metal ions on acrylamidezirconium (IV) arsenate has been stu... more Abstract The adsorption of different metal ions on acrylamidezirconium (IV) arsenate has been studied. The effect of surfactant concentration (Tween 80‐R and Tritron X‐100) on sorption of different metal ions acrylamidezirconium (IV) arsenate was explored. The effect ...
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