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Use of the Anion Exchange Method for Determination of Stability Constants of Metal-Humic Complexes

The stability constants of complexes of rare earth elements with humic and fulvic acids were measured at the in situ conditions involving trace metal concentration, relatively high pH and presence of carbonate and hydroxyl groups, by using the anion exchange equilibrium method. A new correction technique for the sorption of humic substance and its complexes on anion exchange resin was developed and examined.