Effect of soil components on the adsorption of heavy metals under technogenic contamination

The adsorption of copper, zinc, and lead by two urban soils with different degrees of contamination was studied. Changes in the sorption capacity of the soils and the binding strength of the metals with the soil were determined after the removal of organic matter and iron minerals with a potassium pyrophosphate solution and Tamm’s reagent. The selectivity of these solutions for the dissolution of soil components was estimated.