Evaluation of a Generic Multisurface Sorption Model for Inorganic Soil Contaminants

摘要: The performance of a multisurface sorption model approach, composed well-accepted surface complexation models in combination with published "generic" parameter sets, is evaluated for its possible use risk assessment. For that purpose, the leaching broad range potential soil contaminants (Ni, Cu, Zn, Cd, Pb, Ba, Cr, Co, Mo, V, Sn, Sb, S, As, Se) from eight diffusely and industrially contaminated soils predicted simultaneously without any optimization. approach includes aqueous speciation to organic matter (NICA-Donnan model), Fe/Al(hydr)oxides (Generalized Two-Layer Model), clay (Donnan model). Independent data generated by pH-static experiments, performed individual subsamples over wide pH (pH 0.4-12), provide sensitive evaluation performance. Root-mean-squared error values between measured log concentrations entire range, RMSE(log), are < 0.5 Ni, Se, RMSE(log) 1 Sn As. optimization has led recommendations further research particular emphasis on identification mechanisms V expansion sets reduce uncertainty available generic parameters V.