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Calixarene hexaacetato derivative for solvent extraction of chromium (III)

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Title Calixarene hexaacetato derivative for solvent extraction of chromium (III)
 
Creator MALKHEDE, DD
DHADKE, PM
KHOPKAR, SM
 
Subject crown-ethers
cations
 
Description Trace concentrations of chromium(III) have been quantitatively extracted with 0.0001M hexaacetato calix(6)arene in toluene at pH 6.5. Chromium(III) was stripped from the organic phase with 4M hydrochloric acid and determined spectrophotometrically at 520 nm as its complex with xylenol orange. Various parameters influencing the extraction such as pH, reagent concentration, nature of diluents and stripping agents and effect of diverse ions have been examined. The novelty of the proposed method is that chromium in different oxidation states can be separated from each other, apart from its separation from iron(III), manganese(II), cobalt(II) and molybdenum(VI). The method has been extended to analysis of chromium(III) in real samples such as stainless steel.
 
Publisher NATL INST SCIENCE COMMUNICATION
 
Date 2011-08-19T03:42:26Z
2011-12-26T12:56:02Z
2011-12-27T05:44:07Z
2011-08-19T03:42:26Z
2011-12-26T12:56:02Z
2011-12-27T05:44:07Z
1999
 
Type Article
 
Identifier INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY, 38(10), 1079-1082
0376-4710
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10213
http://hdl.handle.net/10054/10213
 
Language en