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中文摘要：
通过对石家庄污水灌溉条件下土壤样品的采集与分析，研究As在土壤不同深度的分布特征。研究结果显示As在土壤中的垂向分布受土壤黏性的影响较大，在土、砂交界处As的含量发生突变，在黏性土中含量相对沙层中较高；在土壤剖面垂向含量分布图中，As在埋深为1．5～3m的土壤中形成高值区。包气带具有一定的吸附能力与环境容量，研究区包气带主要为黏性土，其渗透能力降低，具有较强的吸附性。因此，其防污性能也相对较高，地下水受As的污染风险也相对较低。
英文摘要：
The distribution characteristics of arsenic at different depths in the soil were investigated based on the collected soil samples at the sewage irrigation area in Shijiazhuang. The result shows that the vertical distribution of arsenic in the soil is mostly influenced by the soil stickiness. The content of arsenic varies abruptly at the border between the sand and soil, and it is higher in the cohesive soil than that in the sand. Moreover, arsenic accumulates in the depth of 1.5 to 3 m of the soil based on the vertical distribution. The aeration zone has a certain degree of self-purification capability and environmental capacity. In the study area, the aeration zone consists mainly of the cohesive soil with low permeability and strong adsorbability. Therefore, the aeration zone in the study area has a high capability to prevent the potential pollutions of arsenic into groundwater.
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