elution.

listen to the pronunciation of elution.
Английский Язык - Английский Язык
The process of removing materials that are absorbed with a solvent
the process of extracting one material from another by washing with a solvent to remove adsorbed material from an adsorbent (as in washing of loaded ion-exchange resins to remove captured ions); used to obtain uranium ions
{i} extraction, leaching (Chemistry)