Abstract
A single-point titration method is described for the determination of metal ions and ligands. The method is based on deprotonation of a ligand on complexation with a metal. The resultant change in pH is used to calculate the concentration of the analyte. The limits and advantages of the method are discussed. Four selected systems, Pb 2+-HPO 2− 4, Cu 2+-HCO − 3, Cd 2+-EDTA and Ni 2+-ethylenediamine are used to demonstrate the validity of the equations. The method is applied to determination of total carbonate in serum.
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