DETERMINATION OF THORIUM AND OF ZIRCONIUM BY COMPLEX FORMATION IN MAGNESIUM ALLOY

Journal Article · Fri Jan 01 04:00:00 EST 1960 · Zavodskaya Lab.

OSTI ID:4127116

Volodarskaya, R S

Arsenaso was found to be the most suitable indicator for the colorimetric determination of thorium with Trilon B, as it forms a stable complex with thorium in strongly acid medium. Magnesium alloys containing up to 4% thorium and up to 1% zirconium were successfully analyzed by this method without inteference by Mg, Zn, Al, Mn, or Cd. The Ce/sup 4+/ must be reduced before the titration. The zirconium is determined by backtitrating the excess of the Trilon B with FeCl/sub 3/ at pH = 2.0 to 2.5 in the presence of sulfosalicylic acid. If both thorium and zirconium are present in the same sample, the zirconium must be separated previously with phenylarsonium acid, completing the zirconium determination in the precipitate by complex formation, titrating it with Trilon B. (TTT)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-15-000175
• OSTI ID: 4127116
• Journal Information: Zavodskaya Lab., Journal Name: Zavodskaya Lab. Vol. Vol: 26
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ACIDS
ALLOYS
ALUMINUM
ARSENAZO
ARSENIC COMPOUNDS
ARSONIC ACID
CADMIUM
CERIUM
CHEMICALS
CHEMISTRY
COMPLEXES
EDTA
INTERFERENCE
IONS
IRON CHLORIDES
MAGNESIUM
MANGANESE
ORGANIC ACIDS
ORGANIC SULFUR COMPOUNDS
PHENYL RADICALS
QUANTITATIVE ANALYSIS
REDUCTION
SALICYLIC ACID
SEPARATION PROCESSES
STABILITY
THORIUM
ZINC
ZIRCONIUM