DETERMINATION OF COMBINED NITROGEN IN ZIRCONIUM METAL

Technical Report · Fri Apr 20 04:00:00 EST 1956

OSTI ID:4269450

The metal is dissolved in hot 9 M sulfuric acid assisted by the addition of hydrofluoric acid. The ammonia separated by distillation from alkaline solution is determined absorptiometrically using either sodium phenate/sodium hypochlorite reagent for samples containing between 5 and 90 ppm combined nitrogen or Nessler's reagent for samples containing between 90 ppm and 2% combined nitrogen. The method is applicable to ''pure'' zirconium metal containing between 5 ppm and 2% w/w combined nitrogen. In the 5 to 90 ppm range, results are quantitative with a coefficient of variation of about plus or minus 3% the 400 ppm level, results show a negative bias of about 5% with a coefficient of variation of about plus or minus 3%. (auth) l676O Beryllium is dissolved in sulfuric acid. Phosphoric acid is added to a suitable aliquot and the manganese oxidized to the pink permanganic state using potassium periodate. The manganese is determined spectrophotometrically. The method is suitable for the determination over a range irom 25 to 500 mu g. The precision is equivalent to plus or minus 8 mu g manganese at the 170 mu g level. (J.E.D.) l676l The sample is dissolved in nitric acid, and the solution is examined for lithium by the Lundegardh technique. The method is applicable to samples of magnesium in the form of raspings or turnings over a concentration range 2 to 20 ppm of lithium. (auth)

• Research Organization: United Kingdom Atomic Energy Authority. Industrial Group. Springfields Works, Springfields, Lancs, England
• NSA Number: NSA-13-016759
• OSTI ID: 4269450
• Report Number(s): IGO-AM/S-17
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ACIDITY
AMMONIA
CHEMICAL REACTIONS
CHEMISTRY
DISTILLATION
HYDROFLUORIC ACID
HYPOCHLOROUS ACID
IMPURITIES
METALS
NITROGEN
PHENOLS
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
QUANTITY RATIO
SEPARATION PROCESSES
SODIUM COMPOUNDS
SOLUTIONS
SULFURIC ACID
ZIRCONIUM