Distribution characteristics of As in Shijiazhuang sewage irrigation area, Hebei Province

Abstract：Based on content of As in soil samples collected from the plane and vertical section of Shijiazhuang sewage irrigation area, the authors compiled the As distribution map and summarized characteristics of As distribution. The results show that, in both topsoil and deep soil, As distribution is affected by outside materials, As in topsoil is controlled by the position of wastewater fountainhead, deep soil accepts As which migrates from topsoil, and As high value areas are solely formed in topsoil and deep soil. In vertical direction, As is concentrated in clay bed of deep soil.