SPECTROPHOTOMETRIC METHODS FOR THE DETERMINATION OF OSMIUM. II. EXTRACTION AND DETERMINATION OF OSMIUM IN SITU WITH 1.5-DIPHENYLCARBOHYDRAZIDE

Journal Article · Tue Jan 31 23:00:00 EST 1961 · Talanta (England)

DOI:https://doi.org/10.1016/0039-9140(61)80024-6· OSTI ID:4040090

Goldstein, G; Manning, D L; Menis, O; Dean, J A

A method has been developed for the spectrophotometric determination of microgram quantlties of osmium in uranyl sulfate solutions. The osmium is oxidized to osmium tetroxide, then extracted wtth chloroform. The extracts are added to an ethanolic solutlon of 1:5diphenylcarbchydrazide. A blue-violet colored reaction product is formed which exhibits maximum absorbancy at 560 m mu . After a period of 2 hr for color development the molar absorbancy index is about 31,000. Beer's law is adnered to over a range of 30 to 100 mu g of osmium with a coefficient of variatlon of about 4%. A study was made of the effects of foreign substances and only chloride and octovalent ruthenium were found to interfere. Both of these lnterfering ions can be eliminated. (auth)

• Research Organization: Oak Ridge National Lab., Tenn.
• NSA Number: NSA-15-023476
• OSTI ID: 4040090
• Journal Information: Talanta (England), Journal Name: Talanta (England) Vol. Vol: 7; ISSN TLNTA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
CARBAZIDES
CHEMISTRY
CHLORIDES
COLOR
DPCA
ERRORS
IMPURITIES
INTERFERING ELEMENTS
IONS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OSMIUM
PHENYL RADICALS
PHOTOMETRY
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
RUTHENIUM
SOLUTIONS
SOLVENT EXTRACTION
SPECTRA
SULFATES
URANYL COMPOUNDS