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
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Related Subjects
CHEMISTRY
ERRORS
HYDROGEN PEROXIDES
INTERFERING ELEMENTS
ISOTOPE DILUTION
ISOTOPES
MOLYBDENUM ALLOYS
NIOBIUM
NITRIC ACID
PHOTOMETRY
PRECIPITATION
QUANTITATIVE ANALYSIS
QUINONES
SOLUTIONS
SPECTROSCOPY
STEELS
SULFURIC ACID
TANTALUM
TITANIUM
TRACER TECHNIQUES
TUNGSTEN
TUNGSTEN 185
TUNGSTEN ALLOYS
VANADIUM ALLOYS
ERRORS
HYDROGEN PEROXIDES
INTERFERING ELEMENTS
ISOTOPE DILUTION
ISOTOPES
MOLYBDENUM ALLOYS
NIOBIUM
NITRIC ACID
PHOTOMETRY
PRECIPITATION
QUANTITATIVE ANALYSIS
QUINONES
SOLUTIONS
SPECTROSCOPY
STEELS
SULFURIC ACID
TANTALUM
TITANIUM
TRACER TECHNIQUES
TUNGSTEN
TUNGSTEN 185
TUNGSTEN ALLOYS
VANADIUM ALLOYS