Anodic Dissolution and Analysis of Ruthenium Alloyed with Molybdenum and Tungsten

Journal Article · Mon Oct 01 00:00:00 EDT 1962 · Analytical Chemistry

DOI:https://doi.org/10.1021/ac60191a010· OSTI ID:4778057

Cotton, T. M.; Woolf, A. A.

Ruthenium -- tungsten and ruthenium-- molybdenum alloys can be dissolved uniformly by anodic oxidation in aqueous alkali hydroxides. Potassium persulfate is a constituent of the electrolyte for those alloys which tend to passivate. The ruthenium, present in solution as ruthenate and perruthenate, is completely converted to the latter by oxidation in sulfuric acid--sodium bismuthate and distillation of the resulting ruthenium tetroxide into sodium bicarbonate solution. The perruthenate concentration is measured spectrophotometrically at 315 m mu where the molar absorptivity is 2600. Extension of the method to other alloys is indicated.

• Research Organization: Associated Electrical Industries, Aldermaston, Eng.
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-031554
• OSTI ID: 4778057
• Journal Information: Analytical Chemistry, Journal Name: Analytical Chemistry Journal Issue: 11 Vol. 34; ISSN 0003-2700
• Publisher: American Chemical Society (ACS)
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ABSORPTION
ANODES
BISMUTH OXIDES
DISTILLATION
HYDROXIDES
MEASURED VALUES
MOLYBDENUM ALLOYS
OXIDATION
PERRUTHENATES
PERSULFATES
POTASSIUM SULFATES
QUALITATIVE ANALYSIS
RUTHENIUM ALLOYS
RUTHENIUM OXIDES
SODIUM CARBONATES
SODIUM OXIDES
SOLUTIONS
SULFURIC ACID
TUNGSTEN ALLOYS
WATER