The transport of pollutants in soil was an important factor in affecting the pollution of the soil and groundwater.The object of this paper was to study the effect of different factors on selenite ion transport in loessial soil.The miscible displacement technique under different experiment conditions was used to obtain the breakthrough curves(BTCs) of selenite ion transport in loessial soil columns.By studio of analytical models(STANMOD) software,the BTCs of selenite ion were fitted with deterministic equil...