莠去津在填充土柱中的运移

用土柱实验模拟莠去津在土壤中的运移、实验结果表明相当浓度的莠去津被淋溶到土柱的底部，说明莠去津对地下水存在很大威胁、应用CXTFIT的平衡与非平衡模型模拟莠去津在土柱中的运移，模拟结果表明CXTFIT的非平衡模型能很好地模拟莠去津的穿透曲线．由CXTFIT率定得到的莠去津在土柱实验中的吸附和降解参数和从批次实验得到的吸附和降解参数有较好的一致性．

Atrazine transport in packed soil columns

The transport of atrazine in soil was investigated with soil column experiments. The experiments show that atrazine of high relative concentration reaches the bottom of columns and leads to a high risk of goundwater pollution. Both the equilibrium model and non-equilibrium model using the CXTFIT pmgram were adopted to simulate the transport of atrazine in soil, and the result shows that the non-equilibrium model can well simulate the breakthrough curve of atrazine. It was found that the sorption and degradation parameters of atrazine calibrated by the CXTFIT program obtained from soil column experiments were in good agreement with those from the batch equilibrium experiments.