The solvent extraction of metal chelates has been used for a long time for separation and determination of metal ions. The first quantitative description of the extraction process was, however, not made until 1941 when Kolthoff and Sandell compared experimental data with theoretical predictions for the extraction of metal dithizonates. They found that the theory they proposed was valid under wide experimental conditions. However, the systems used by Kolthoff and Sandell were simple ones and hence relatively simple theory was used to successfully explain their behaviour. In practice solvent extraction systems are complicated by other factors, e.g. hydrolysis, polymerisation and complex formation in the aqueous phase. It has subsequently become apparent that such factors have an important influence on the solvent extraction of chelates. Several authors have published reports since 1941 on the theory of solvent extraction of metal chelates which take these factors into account. In particular two publications by Irving, Rossotti and Williams and Stary (chapter 3) should be noted for their comprehensive treatment of the subject. The influence of these factors will be discussed in the following sections.
| Identifer | oai:union.ndltd.org:ADTP/275021 |
| Date | January 1972 |
| Creators | Richardson, Ralph Alan |
| Publisher | ResearchSpace@Auckland |
| Source Sets | Australiasian Digital Theses Program |
| Language | English |
| Detected Language | English |
| Rights | Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated., http://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm, Copyright: The author |
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