石油类污染物在黄土地区土壤中竖向迁移特性试验研究

通过室内土柱滤动态试验，模拟了石油类污染物在饱水条件下在黄土地区土壤中竖向迁移的过程，初步探讨了石油类污染物在该类土壤中的竖向迁移特性，试验结果表明，黄土对石油类有很强的截留能力，石油类很难向土壤深层迁移，土壤中可检出的石油类最大迁移深度度为30厘米，然而石油类以水溶相向深层土壤的微量多不容忽,运动场支厚度为35厘米条件下，渗出水中石油类浓度最高可达3．48mg/L。

An experimental study on transferring process of petroleum pollutants in soils of loess plateau

An experiment was carried out to simulate the transferring process of petroleum pollutants through soil columns which were saturated with water. The characteristics of petroleum pollutants transferring through soil columns was expounded and discussed. The experimental results show that loess soils have high capacity of holding oil pollutants, i.e. it will be hard for the pollutants to transport into a deep layer of the soils. Under the experimental conditions, the maximum depth where the pollutants could be detected is about 30 cm. But much attention should be paid to content of petroleum pollutants in the water flowed out through the soil columns, the highest concentration of the pollutants in water seeped out from the columns is as high as 3.48mg/l under the experimental conditions.