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In the course of a rather cursory examination of the elution of tetra-positive ions from the cation exchange resin Dowex 50 with hydrochloric acid solutions, the authors have discovered a very effective method of separating zirconium from hafnimu. In view of the great labor involved in preparing even reasonably pure hafnium compounds by existing methods, they feel that this procedure will prove very valuable to those interested in obtaining hafnium compounds free of zirconium. Although the conditions which give satisfactory separation were first worked out using microgram amounts of material and the radioactive tracer technique, the run described here, involving milligrams of material, illustrates the applicability of the method to the production of significant amounts of pure hafnium and zirconium.
Analytical Chemistry of Zirconium and Hafnium compiles literature on the characterization and analysis of zirconium and hafnium. Various methods in studying the properties of the featured elements are presented in this book. This book also discusses the aqueous solutions of zirconium and hafnium. It then explains the methods such as dissolution of ores and alloys, detection and identification, and gravimetric determinations. This text further examines the titrimetric, electrometric, and absorptiometric methods, as well as methods of separations using ion-exchange and using solvent extraction ...