chelation solvent extraction

https://doi.org/10.1351/goldbook.10206
Extraction method wherein charged analytes are extracted from an aqueous phase into an organic phase, assisted by a chelating agent.
Notes:
  1. The chelating agent replaces water molecules in the coordination sphere of the metal ions. Consequently, the resultant metal chelates have a hydrophobic character which facilitates their transfer to the organic phase.
  2. The analyte(s) are usually metal ions.
Source:
PAC, 2016, 88, 517. (Glossary of terms used in extraction (IUPAC Recommendations 2016)) on page 532 [Terms] [Paper]