THE DETERMINATION OF TUNGSTEN IN TITANIUM, ZIRCONIUM, AND THEIR ALLOYS

Journal Article · Sun Jun 01 04:00:00 EDT 1958 · Analyst

DOI:https://doi.org/10.1039/an9588300326· OSTI ID:4334331

Wood, D F; Clark, R T

To fulfill the need for satisfactory methods for the determination of tungsten over the range 0.002 to about 1% in titanium and its alloys, two absorptiometric procedures were developed, and subsequently extended to the examination of zirconlum and its alloys. A direct procedure, based on the yellow color produced by the reaction of reduced tungsten with thiocyanate ions, is suitable for the determination of tungsten from 0.05 to 1.6% in titanium and many of its alloys, and from 0.01 to 1.6% in zirconium and its alloys; larger amounts can be determined by using a smaller sample weight. The procedure is simple and rapid, and is also suitable for application on a routine basis. Vanadium and molybdenum interfere, and, when these metals exceed specified limits, the toluene- 3: 4-dithiol procedure is recommended. A procedure, which depends on the formation of a bluish green complex with toluene-3:4-dithiol, is applicable to the determination of tungsten in both titanium and zirconium-bearing materials over the range 0.002 to 0.8%. Vanadium does not interfere, and interference by molybdenum is overcome by means of a preliminary sulfide separation. (auth)

• Research Organization: Imperial Chemical Industries, Ltd., Kynoch Works, Witton, Birmingham, Eng.
• NSA Number: NSA-12-012999
• OSTI ID: 4334331
• Journal Information: Analyst, Journal Name: Analyst Vol. Vol: 83
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
CHEMICAL REACTIONS
CHEMISTRY
COLOR
COMPLEXES
CYANIDES
ERRORS
INTERFERING ELEMENTS
IONS
MEASURED VALUES
MOLYBDENUM COMPOUNDS
MOLYBDENUM SULFIDES
ORGANIC SULFUR COMPOUNDS
PHOTOMETRY
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
REDUCTION
SEPARATION PROCESSES
SPECTROSCOPY
THIOCYANATES
THIOCYANIDES
TITANIUM
TITANIUM ALLOYS
TOLUENE
TRACE AMOUNTS
TUNGSTEN
TUNGSTEN ALLOYS
TUNGSTEN COMPOUNDS
VANADIUM COMPOUNDS
ZIRCONIUM
ZIRCONIUM ALLOYS