Extractive separation of alkaline-earth elements in the determination of lithium in brines

Journal Article · Mon Jul 20 04:00:00 EDT 1987 · J. Anal. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:5272922

Shatskaya, S S; Samoilov, Yu M

The aim of this work was to investigate the possibility of using D2EHDTPA and D2EHPA to separate lithium from alkaline-earth elements, with subsequent determination of the lithium in the aqueous phase by the flame-photometric method. Extractive purification makes it possible to lower by an order of magnitude, in comparison to the direct method, the limit of detection of lithium in calcium chloride brines, and also to determine lithium in strontium compounds. The relative standard deviations in the determination of lithium by the method which has been developed do not exceed 0.05.

• Research Organization: Institute of the Chemistry of Solids and of the Treatment of Mineral Raw Materials, Novosibirsk (USSR)
• OSTI ID: 5272922
• Journal Information: J. Anal. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Anal. Chem. USSR (Engl. Transl.); (United States) Vol. 42:2; ISSN JACUA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
400105 -- Separation Procedures
520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ALKALI METALS
ALKALINE EARTH METALS
AMMONIUM COMPOUNDS
BRINES
CHEMICAL ANALYSIS
COMPARATIVE EVALUATIONS
ELEMENTS
ESTERS
EXTRACTION
FLAME PHOTOMETRY
LITHIUM
MATERIALS TESTING
METALS
MONITORING
OPTIMIZATION
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANIC SOLVENTS
PHOSPHONIC ACID ESTERS
PHOTOMETRY
POLLUTION
QUANTITATIVE CHEMICAL ANALYSIS
SENSITIVITY
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENT PROPERTIES
SOLVENTS
TESTING
WATER POLLUTION