GAMMA SPECTROMETRIC DETERMINATION OF HAFNIUM IN ZIRCONIUM

Journal Article · Tue Jan 01 04:00:00 EST 1963 · Chemicke Listy (Czechoslovakia)

OSTI ID:4138216

Zitnansky, B; Sebestian, I

A method for determining Hf in Zr is described that utilizes radioactivation and spectrometric scintillation gamma analysis. The Hf concentration is determined from measurements of the photopeaks of the 229.5- and 136.2kev levels in the gamma spectra of Hf/sup 175/, Hf/sup 181/, and Zr/sup 95/ . From the Hf activity measured below the 22.5-kev level the pulses from Zr/sup 95/ + Nb/sup 95/ are subtracted, these being recorded simultaneously with the Hf/ sup 175/ and Hf/sup 181/ pulses. As a standard for the determination of Hf in Zr by this method it is necessary to simultaneously activate pure Zr and the unknown specimen under the same conditions, since data from pure Zr is needed for determination of the conversion constant. Development of this method for comparative determinations is described. For this purpose it is sufficient to compare a sample containing known Zr and Hf quantities with the activities of the unknown specimens, the conversion constant of Zr not being necessary. (BBB)

• Research Organization: Vyzkumny Ustav Zvarcsky, Bratislava
• NSA Number: NSA-18-005219
• OSTI ID: 4138216
• Journal Information: Chemicke Listy (Czechoslovakia), Journal Name: Chemicke Listy (Czechoslovakia) Vol. Vol: 57; ISSN CHLSA
• Country of Publication: Country unknown/Code not available
• Language: Czech

Related Subjects

CHEMISTRY
GAMMA SPECTROMETERS
HAFNIUM
HAFNIUM 175
HAFNIUM 181
NIOBIUM 95
PULSE ANALYZERS
QUANTITATIVE ANALYSIS
ZIRCONIUM
ZIRCONIUM 95