SPECTROGRAPHIC EXAMINATION OF SODIUM NITRITE FOR TRACE IMPURITIES

Technical Report · Wed Feb 20 04:00:00 EST 1952

OSTI ID:4233618

Goodfellow, G I; Boyd, T H; Diggle, M

Development of methods for determining trace amounts of the lighter elements in sodium nitrite is described, Aluminums berylliums calciums and magnesium are determined by the iron flux procedure after preliminary separation from sodium on a cation exchange column. Beryllium, scandiums and titandium are similarly determined after separation from sodium by coprecipitation with iron hydroxide. Lithium and potassium are determined by directly spectrographing a solution of the sodium nitrite by the Lundegardh procedure. Methods tried unsuccessfully were direct arcing of the solid sample, direct sparking of a solution of the samples and concertration or impurities as their oxinates prior to determination by the iron flow procedure. (auth) l7829 Investigations are described which have been carried out on the conversion of uranyl nitrates ammonium diuranate and urandous fluoride to the volatile hexafluoride for isotopic mass abundance measurements by the mass spectrometer. Urandous fluoride was fluorinated by treatment with condensed chlorine trifluoride in an enclosed system in the absence of air and moisture. Amamonium diurandates and uranyl nitrate were fluorinated after conversion to uranoso -urandic oxide. Separation of excess chlorine trifluoride and various by-products from the prepared uranium hexafluoride was effected by fractionation involving the use of liquid air and solid carbon dioxide/trichlorethylene ''cold traps.'' The pure uranium hexafluoride was collected in a pyrex glass ''break seal'' sample tube which was then sealed off, (auth)

• Research Organization: Gt. Brit. Springfields Works, Springfields, Lancs, England
• NSA Number: NSA-13-017828
• OSTI ID: 4233618
• Report Number(s): SCS-R-201
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALUMINUM
BERYLLIUM
CALCIUM
CATIONS
CHEMICAL REACTIONS
CHEMICALS
CHEMISTRY
ENRICHMENT
HETEROCYCLICS
HYDROXIDES
IMPURITIES
ION EXCHANGE MATERIALS
IRON
IRON HYDROXIDES
LITHIUM
MAGNESIUM
NITRITES
ORGANIC NITROGEN COMPOUNDS
POTASSIUM
PRECIPITATION
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
QUINOLINE
RECORDING SYSTEMS
SCANDIUM
SEPARATION PROCESSES
SODIUM
SODIUM COMPOUNDS
SOLIDS
SOLUTIONS
SPECTROSCOPY
TITANIUM
TRACE AMOUNTS