Synergistic extraction of calcium and strontium into nitrobenzene by using hydrogen dicarbollylcobaltate and dodecaethylene glycol

Solvent extraction of microamounts of calcium and strontium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H + B − ) in the presence of dodecaethylene glycol (DDEG, L) has been investigated. The equilibrium data have been explained assuming that the species HL + , H 2 L 2+ , ML 2+ and...

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Published inJournal of radioanalytical and nuclear chemistry Vol. 295; no. 3; pp. 2215 - 2220
Main Authors Makrlik, E, Vanura, P, Selucky, P
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.03.2013
Springer
Subjects
Calcium
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Glycols
Hadrons
Heavy Ions
Hydrogen
Inorganic Chemistry
Nitrobenzenes
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Solvent extraction
Stability constants
Strontium
Water
Strontium
Water–nitrobenzene system
Complexation
Dodecaethylene glycol
Calcium
Extraction and stability constants
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Summary:Solvent extraction of microamounts of calcium and strontium by a nitrobenzene solution of hydrogen dicarbollylcobaltate (H + B − ) in the presence of dodecaethylene glycol (DDEG, L) has been investigated. The equilibrium data have been explained assuming that the species HL + , H 2 L 2+ , ML 2+ and MHL 3+ (M 2+  = Ca 2+ , Sr 2+ ; L = DDEG) are extracted into the organic phase. The values of extraction and stability constants of the complex species in nitrobenzene saturated with water have been determined. It was found that in this nitrobenzene medium, the stability constant of the SrL 2+ complex is somewhat higher than that of CaL 2+ .
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-012-2273-1