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THE DETERMINATION OF TUNGSTEN IN HIGH ALLOY STEELS BY ISOTOPE DILUTION

Journal Article · · Recueil des Travaux Chimiques des Pays-Bas (Netherlands)
An isotope dilution procedure usiug Wr/sup 185/ was developed for the determination of tungsten in high alloy steels. Tungsten is determined spectrophotometr-really with hydroquinoofre in sulfuric acid medium, after homogeneous precipitation f-om a nitric acid hydrogen per-oxide solution. For nrolybdenum-vanadium--tungsten alloy steels no further chemical separations are required. The radiometric correction is applied to the residual tungsten so as to minimize eounting errors. Analyses carried out on NBS samples showed good accuracy and precision. For high alloy steels containing niobium, tantalum, and titanium a chemical separation of tungsten is neeessary to avoid interference in the subsequent spectrophotometric determination. Although the recovery of tuugsten is quite low, the magnesia method is entirely satisfactory. The method was successfully tested on a number of NBS high alloy steels to which varying amounts of tantalum and titanium were added. (auth)
Research Organization:
Universiteit, Ghent
Sponsoring Organization:
USDOE
NSA Number:
NSA-16-011562
OSTI ID:
4807549
Journal Information:
Recueil des Travaux Chimiques des Pays-Bas (Netherlands), Journal Name: Recueil des Travaux Chimiques des Pays-Bas (Netherlands) Vol. Vol: 9; ISSN RTCPA
Country of Publication:
Country unknown/Code not available
Language:
English