Numerical Simulation Study on Migration Law of Pesticide in Different Soil

By the soil column experiments, the concentration of the pesticide´s solute in the outlet flowing were derived. The model parameters are determined using Kinetic model of two-site absorption-desorption model through experimental results and the MATLAB program developed by the authors. Based on these, the trends of pesticide´s solute transport at different time and depth in the soil column was estimated. This study suggests that Kinetic model of two-site absorption-desorption model can be used as a useful approach to better quantifying environmental fate of pesticide.