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Simultaneous determination of tantalum and hafnium in silicates by neutron activation analysis

Analytica Chimica Acta

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Abstract

A neutron activation procedure suitable for the routine determination of tantalum and hafnium in silicates is described. The irradiated sample is fused with sodium peroxide and leached, and the insoluble hydroxides are dissolved in dilute hydrofluoric acid-hydrochloric acid. After LaF3 and AgCl scavenges, tantalum and hafnium are separated by anion exchange. Tantalum is obtained radiochemically pure; 233Pa and 95Zr contaminants in the hafnium fraction are resolved by ??-ray spectrometry. The chemical yield of the procedure is detemined after counting by re-irradiation. Values for the 8 U.S. Geological Survey standard rocks are reported. ?? 1968.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Simultaneous determination of tantalum and hafnium in silicates by neutron activation analysis
Series title:
Analytica Chimica Acta
Volume
42
Issue:
C
Year Published:
1968
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Analytica Chimica Acta
First page:
365
Last page:
370
Number of Pages:
6