Modeling atrazine behavior

Ulrich, M. M., S. R. Mttller, H. P. Singer, D. M. Imboden, and R. P. Schwarzenbach, Input and dynamic behavior of the organic pollutants tetrachloroethene, atrazine, and NTA in a lake A study combining mathematical modeling and field measurements , Environ. Sci. Technol., 28, 1674-1685 (1994). 

Studies on sorption of triazines by individual soil constituents and by model sorbents have been very helpful in evaluating sorption mechanisms and in assessing the potential contribution of various constituents to triazine sorption by soils. However, intimate associations between organic substances, silicate clays, and oxyhydroxide materials modify the sorptive properties of the individual constituents. Associations between soil constituents influence soil properties - such as pH, specific surface area, and functional group availability - which in turn influence triazine sorption behavior. For instance, atrazine and simazine sorption behavior is different for synthetic mixtures of model soil... 

Soil represents the final destination for industrial residues and for biological and nonbiological processes. It is possible to obtain mathematical models for the transformation of chemical products in the soil, e.g., the fate of thiocarbamate herbicides in the system, the effect of atrazine on denitrification, and the effect of atrazine on the transformation of a nitrogen fertilizer (urea).31 The chemical-physical model of the behavior of the herbicides in the air-water-solid system is presented in Figure 3.1. 

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