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LIQUID-LIQUID-EXTRACTION OF NIOBIUM(V) IN THE PRESENCE OF OTHER METALS WITH HIGH-MOLECULAR-MASS AMINES AND ASCORBIC-ACID

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Title LIQUID-LIQUID-EXTRACTION OF NIOBIUM(V) IN THE PRESENCE OF OTHER METALS WITH HIGH-MOLECULAR-MASS AMINES AND ASCORBIC-ACID
 
Creator KARVE, MA
KHOPKAR, SM
 
Description A novel method is proposed for the solvent extraction of niobium(V). A 0.1M solution of Aliquat 336S in xylene quantitatively ''tracts microgram quantities of niobium(V) from 0.01M ascorbic acid at pH 3.5-6.5. Niobium from the organic phase is stripped with 0.5M nitric acid and determined spectrophotometrically in the aqueous phase as its complex with TAR. The method permits separation of niobium not only from tantalum(V) but also from vanadium(IV), titanium(IV), zirconium(IV), thorium(IV), chromium(III), molybdenum(VI), uranium(VI), iron(III), etc. Niobium from stainless steel was determined with a precision of 0.42%.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-25T15:39:29Z
2011-12-26T12:51:18Z
2011-12-27T05:37:54Z
2011-07-25T15:39:29Z
2011-12-26T12:51:18Z
2011-12-27T05:37:54Z
1993
 
Type Article
 
Identifier TALANTA, 40(6), 913-917
0039-9140
http://dx.doi.org/10.1016/0039-9140(93)80051-R
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6721
http://hdl.handle.net/10054/6721
 
Language en