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
Authors:	DEORKAR, NV KHOPKAR, SM
Keywords:	polyurethane foam acid solution
Issue Date:	1991
Publisher:	ELSEVIER SCIENCE BV
Citation:	ANALYTICA CHIMICA ACTA, 245(1), 27-33
Abstract:	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.
URI:	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
ISSN:	0003-2670
Appears in Collections:	Article

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