IUPAC definition : The planned removal from solution of a micro- or macro-component by the intentional
formation of a contaminated host precipitate, or by the adsorption or entrapment of
the component by an added solid.;
The planned removal from solution of a micro- or macro-component by the intentional
formation of a contaminated host precipitate, or by the adsorption or entrapment of
the component by an added solid.