The Use of 1,3-Dimethylvioluric Acid in Spectrophotometric Titrations of Alkali and Alkaline Earth Salts
A spectrophotometric study was made of the lithium, sodium, potassium, rubidium, cesium, beryllium, and magnesium salts of 1,3-dimethyl-5- isonitrosobarbituric acid (1,3-dimethylvioluric acid, DMVA). The applicability of DMVA for the spectrophotometric titration of alkali and alkaline earth salts in aqueous solution was investigated. These metals were determined with an accuracy that ranged from 1 to 10 parts per thousand in 0.01 to 0.00001M concentrations. At these concentrations the precision, expressed as standard deviation, ranged from 01.3 to 1.5%. Separation and thermal decomposition of potassium tetraphenylborate yielded water-soluble potassium borate which was titrated spectrophotometrically by DMVA.
- Research Organization:
- Univ. of Washington, Seattle
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-012968
- OSTI ID:
- 4803407
- Journal Information:
- Analytical Chemistry, Journal Name: Analytical Chemistry Journal Issue: 4 Vol. 34; ISSN 0003-2700
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
BARBITURIC ACID
BERYLLIUM COMPOUNDS
BORATES
CESIUM COMPOUNDS
DRUGS
HETEROCYCLICS
LITHIUM COMPOUNDS
MAGNESIUM COMPOUNDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHENYL RADICALS
PHOTOMETRY
POTASSIUM COMPOUNDS
QUALITATIVE ANALYSIS
RUBIDIUM COMPOUNDS
SODIUM COMPOUNDS
SOLUTIONS
SPECTROSCOPY
TITRATION
WATER
BARBITURIC ACID
BERYLLIUM COMPOUNDS
BORATES
CESIUM COMPOUNDS
DRUGS
HETEROCYCLICS
LITHIUM COMPOUNDS
MAGNESIUM COMPOUNDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHENYL RADICALS
PHOTOMETRY
POTASSIUM COMPOUNDS
QUALITATIVE ANALYSIS
RUBIDIUM COMPOUNDS
SODIUM COMPOUNDS
SOLUTIONS
SPECTROSCOPY
TITRATION
WATER