Separation of Hafnium from Zirconium and Their Determination: Separation by Anion-Exchange

A procedure is described for the separation of hafnium from zirconium and their individual determination. The sample is dissolved in sulfuric and hydrofluoric acids and the hydrofluoric acid removed by fuming. After dilution with water, the solution is transferred to a column containing a strong qua...

Descripción completa

Detalles Bibliográficos
Autores principales: Machlan, Lawrence A., Hague, John L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 1962
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5324969/
http://dx.doi.org/10.6028/jres.066A.053
_version_ 1782510299087110144
author Machlan, Lawrence A.
Hague, John L.
author_facet Machlan, Lawrence A.
Hague, John L.
author_sort Machlan, Lawrence A.
collection PubMed
description A procedure is described for the separation of hafnium from zirconium and their individual determination. The sample is dissolved in sulfuric and hydrofluoric acids and the hydrofluoric acid removed by fuming. After dilution with water, the solution is transferred to a column containing a strong quaternary amine anion-exchange resin (Dowex-1). The hafnium is eluted with diluted (3.5 percent by volume) sulfuric acid solution. Zirconium is removed by elution with 10 percent by volume sulfuric acid solution. The elements are precipitated with cupferron, ignited, and weighed as the oxides. For samples containing from twenty to eighty percent of zirconium, a second separation of the hafnium fraction using the column is necessary.
format Online
Article
Text
id pubmed-5324969
institution National Center for Biotechnology Information
language English
publishDate 1962
publisher [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology
record_format MEDLINE/PubMed
spelling pubmed-53249692023-06-15 Separation of Hafnium from Zirconium and Their Determination: Separation by Anion-Exchange Machlan, Lawrence A. Hague, John L. J Res Natl Bur Stand A Phys Chem Article A procedure is described for the separation of hafnium from zirconium and their individual determination. The sample is dissolved in sulfuric and hydrofluoric acids and the hydrofluoric acid removed by fuming. After dilution with water, the solution is transferred to a column containing a strong quaternary amine anion-exchange resin (Dowex-1). The hafnium is eluted with diluted (3.5 percent by volume) sulfuric acid solution. Zirconium is removed by elution with 10 percent by volume sulfuric acid solution. The elements are precipitated with cupferron, ignited, and weighed as the oxides. For samples containing from twenty to eighty percent of zirconium, a second separation of the hafnium fraction using the column is necessary. [Gaithersburg, MD] : U.S. Dept. of Commerce, National Institute of Standards and Technology 1962 1962-12-01 /pmc/articles/PMC5324969/ http://dx.doi.org/10.6028/jres.066A.053 Text en https://creativecommons.org/publicdomain/zero/1.0/ The Journal of Research of the National Bureau of Standards Section A is a publication of the U.S. Government. The papers are in the public domain and are not subject to copyright in the United States. Articles from J Res may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
spellingShingle Article
Machlan, Lawrence A.
Hague, John L.
Separation of Hafnium from Zirconium and Their Determination: Separation by Anion-Exchange
title Separation of Hafnium from Zirconium and Their Determination: Separation by Anion-Exchange
title_full Separation of Hafnium from Zirconium and Their Determination: Separation by Anion-Exchange
title_fullStr Separation of Hafnium from Zirconium and Their Determination: Separation by Anion-Exchange
title_full_unstemmed Separation of Hafnium from Zirconium and Their Determination: Separation by Anion-Exchange
title_short Separation of Hafnium from Zirconium and Their Determination: Separation by Anion-Exchange
title_sort separation of hafnium from zirconium and their determination: separation by anion-exchange
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5324969/
http://dx.doi.org/10.6028/jres.066A.053
work_keys_str_mv AT machlanlawrencea separationofhafniumfromzirconiumandtheirdeterminationseparationbyanionexchange
AT haguejohnl separationofhafniumfromzirconiumandtheirdeterminationseparationbyanionexchange

Ejemplares similares