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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/6721

Title: LIQUID-LIQUID-EXTRACTION OF NIOBIUM(V) IN THE PRESENCE OF OTHER METALS WITH HIGH-MOLECULAR-MASS AMINES AND ASCORBIC-ACID
Authors: KARVE, MA
KHOPKAR, SM
Issue Date: 1993
Publisher: ELSEVIER SCIENCE BV
Citation: TALANTA, 40(6), 913-917
Abstract: 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%.
URI: 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
ISSN: 0039-9140
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