Determination of hafnium in zirconium and its alloys by stable isotope dilution-neutron activation analysis. [Neutron reactions]

Journal Article · Tue Nov 01 04:00:00 EST 1983 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00263a012· OSTI ID:7139692

Yonezawa, C; Komori, T

A new method, an isotope dilution method combined with neutron activation analysis, has been applied to the determination of traces of hafnium in zirconium and Zircaloys. A known amount of /sup 174/Hf-enriched hafnium solution was added to the sample as a spike. The mixture was dissolved and then irradiated in a reactor, together with natural and spike hafnium solutions. After cooling, the spiked hafnium was separated and the ..gamma..-ray spectra were measured, together with the natural and spike hafniums. The content of hafnium in the sample was calculated from the measured /sup 175/Hf//sup 181/Hf count rate ratio. A few parts-per-million of hafnium was determined with a relative standard deviation of 0.93%. The method was used to determine the value of hafnium in zirconium and Zircaloy reference materials, prepared by the National Bureau of Standards (NBS) and the Japan Atomic Energy Research Institute (JAERI). 3 figures, 4 tables.

• Research Organization: Japan Atomic Energy Research Inst., Tokai
• OSTI ID: 7139692
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 55:13; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400101* -- Activation
Nuclear Reaction
Radiometric & Radiochemical Procedures
ACTIVATION ANALYSIS
ALLOYS
ALPHA DECAY RADIOISOTOPES
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHEMICAL ANALYSIS
DATA
DAYS LIVING RADIOISOTOPES
ELEMENTS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
GAMMA SPECTRA
HADRON REACTIONS
HAFNIUM 174
HAFNIUM 181
HAFNIUM ISOTOPES
HEAVY NUCLEI
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPE APPLICATIONS
ISOTOPE DILUTION
ISOTOPE RATIO
ISOTOPES
METALS
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUMERICAL DATA
QUANTITATIVE CHEMICAL ANALYSIS
RADIOISOTOPES
SPECTRA
TIN ALLOYS
TRACE AMOUNTS
TRACER TECHNIQUES
TRANSITION ELEMENTS
YEARS LIVING RADIOISOTOPES
ZIRCALOY
ZIRCONIUM
ZIRCONIUM ALLOYS
ZIRCONIUM BASE ALLOYS