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LIQUID-LIQUID-EXTRACTION OF ZIRCONIUM FROM HAFNIUM AND OTHER ELEMENTS WITH DICYCLOHEXYL-18-CROWN-6

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Title LIQUID-LIQUID-EXTRACTION OF ZIRCONIUM FROM HAFNIUM AND OTHER ELEMENTS WITH DICYCLOHEXYL-18-CROWN-6
 
Creator DEORKAR, NV
KHOPKAR, SM
 
Subject polyurethane foam
acid solution
spectrophotometry
zirconium
hafnium
extraction
dicyclohexyl-18-crown-6
 
Description Zirconium was quantitatively extracted with 2.5 x 10(-2) M dicyclohexyl-18-crown-6 in dichloromethane from 8.5 M hydrochloric acid. It was stripped with 0.5 M hydrochloric acid and was determined spectrophotometrically as its complex with Arsenazo III. Hafnium was not extracted under these conditions, but from the residual aqueous phase it was extracted with 7.0 x 10(-2) M dicyclohexyl-18-crown-6 in dichloromethane from 9.0 M hydrochloric acid. It was stripped with 0.1 M perchloric acid and determined spectrophotometrically at 540 nm as its complex with xylenol orange. The separation of zirconium and hafnium from other metals is also described.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-25T15:42:17Z
2011-12-26T12:51:19Z
2011-12-27T05:37:55Z
2011-07-25T15:42:17Z
2011-12-26T12:51:19Z
2011-12-27T05:37:55Z
1991
 
Type Article
 
Identifier ANALYTICA CHIMICA ACTA, 245(1), 27-33
0003-2670
http://dx.doi.org/10.1016/S0003-2670(00)80197-X
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6722
http://hdl.handle.net/10054/6722
 
Language en