Abstract
SummaryStability constants describing Cu2+ combination with three natural and one synthetic polycarboxylates were calculated from pH measurements alone, and using a Cu2+ ion selective electrode. Good agreement between the two methods justified the theory for polymer‐cation association. The results were consistent with the formation of a single complex CuL2 over a fairly wide range of metal‐ligand (L) ratios. The stability constant (βHCu) that was independent of polymer charge allowed the prediction of copper speciation in soil solution as a function of pH and soluble organic matter.
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