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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, along with separation of hafnium from zirconium. The latter part of this text presents methods such as spectrographic analyses, X-ray analyses, and neutron activation analysis and separation of tracers. This book will come in handy for chemists and chemistry students, as well as for others interested in studying zirconium and hafnium.
The Kroll Process for the production of zirconium utilizes the reduction of zirconium tetrachloride with metallic magnesium. Control of the magnesium content of the final zirconium metal is essential, as residual magnesium adversely influences the properties of zirconium. In this thesis a volumetric method has been presented for the determination of magnesium. An initial separation of the bulk of zirconium from magnesium was carried out by a rapid, batch ion exchange in hydrofluoric-hydrochloric acid solution. In this step 94% of the zirconium can be removed. The remainder was precipitated with ammonia in the presence of ammonium chloride. Magnesium is determined in the filtrate by the complexometric titration with disodium ethylenediamine tetraacetate. This method was applied to magnesium-zirconium mixtures containing from 1% to 0.1% magnesium. The lower level of 0.1% was established because the volume of versenate used in titration becomes too small for accurate determinations at concentrations lower than this.