THE DIRECT SPECTROGRAPHIC DETERMINATION OF BORON, MOLYBDENUM, AND MANGANESE IN URANIUM TETRAFLUORIDE

Technical Report · Sat Jun 01 04:00:00 EDT 1963

OSTI ID:4170756

Podobnik, B; Lorenzini, L

A method is described for the determination of some impurities in uranium tetrafluoride. The sample is mixed with 25% of alumina, containing Ge and V as the internal standard elements, and arced in d-c arc of 8 amp, in graphite electrodes. Alumina prevents uranium excitation, transforming volatile uranium tetrafluoride into the refractory uranium oxide during the exposure, and in the same time acts as the spectroscopic carrier. The elements studied are representative of metallic fluorides having different volatilities: boron for very volatile fluorides, molybdenum for medium volatile fluorides, and mangandese for the less volatile fluorides. The sensitivities reached are respectively: 0.1 ppm of boron, 0.5 ppm of molybdenum, 0.5 ppm of manganese in UF/sub 4/. A procedure is described for the preparation of the standard mixture for the working curves. Some experiments were made to obtain the reproducibility data for these three elements: the standard deviations are below 10% for B and Mo, and below 15% for Mn. (auth)

• Research Organization: Nuklear-Chemie und-Metallurgie G.m.b.H., Wolfgang bei Hannau am Main, Germany; Italy. Comitato Nazionale per l'Energia Nucleare. Centro di Studi Nucleari, Casaccia
• NSA Number: NSA-18-000170
• OSTI ID: 4170756
• Report Number(s): RT/CHI(63)-21
• Country of Publication: Italy
• Language: English

Related Subjects

ALUMINUM OXIDES
AMIDES
BORON
BORON FLUORIDES
CARRIERS
CHEMISTRY
COMPLEXES
ELECTRIC ARCS
ELECTRODES
EXCITATION
GERMANIUM
GRAPHITE
HUMIDITY
IMPURITIES
MANGANESE
MANGANESE FLUORIDES
MIXING
MOLYBDENUM
MOLYBDENUM FLUORIDES
NITRATES
QUANTITATIVE ANALYSIS
SPECTROSCOPY
STABILITY
STANDARDS
TEMPERATURE
URANIUM NITRATES
URANIUM TETRAFLUORIDE
VANADIUM
VOLATILITY