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Solvent extraction separations with crown ethers and cryptands

DSpace at IIT Bombay

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Title Solvent extraction separations with crown ethers and cryptands
 
Creator KHOPKAR, SM
GANDHI, MN
 
Subject liquid-liquid-extraction
carbon-paste electrode
alkali-metal picrates
spectrophotometric determination
photometric-determination
synergistic extraction
selective extraction
flow-injection
benzothiacrown ether
carboxylic-acids
 
Description Crown ethers and cryptands have proved to be versatile extractants for alkali and alkaline earths. These are equally promising for the extraction of transition elements. In this article, extraction equilibria with crown ethers is outlined and the factors influencing these extractions are enumerated. Applications of crown ethers for separation of metals are described separately under s-, p- and d-block elements. The use of these extractants in spectrophotometry, fluorimetry extraction chromatography and ion-selective electrodes is outlined. A brief account of the applications of these compounds for analysis of metal pollutants in environment is presented. Data on the optimum conditions for solvent extraction, viz. pH, nature of diluent, counter anion used, extraction concentration, stripping agent, interferences, and other special features are presented in tables, separately for s-, p- and d- block elements.
 
Publisher COUNCIL SCIENTIFIC INDUSTRIAL RESEARCH
 
Date 2011-10-14T11:36:28Z
2011-12-15T09:16:20Z
2011-10-14T11:36:28Z
2011-12-15T09:16:20Z
1996
 
Type Review
 
Identifier JOURNAL OF SCIENTIFIC & INDUSTRIAL RESEARCH,55(3)139-155
0022-4456
http://dspace.library.iitb.ac.in/xmlui/handle/10054/13909
http://hdl.handle.net/100/3111
 
Language en