EDTA Titrations for Metal Ion Analysis

EDTA titrations are used to analyze metal ions through direct titration, back-titration, and replacement titration. Each method helps measure metals in solution when the reaction conditions are different. In all three cases, EDTA binds metal ions to form stable complexes.

In direct titration, the...

EDTA titration includes direct, back, displacement, indirect, and alkalimetric titration.

In a direct titration, a metal ion solution is directly titrated with EDTA—for example, a lead(II) ion solution is buffered at pH 10, with tartrate already present to prevent lead(II) hydroxide precipitation.

This solution is directly titrated...