The Release Characteristics of Cr(Ⅵ) in Contaminated Soil by Dynamic Simulation of Acid Rain

Abstract

 The release characteristics of Cr(Ⅵ) from contaminated soil, spiked with inorganic salts of Cr(Ⅵ),were investigated by dynamic leaching experiment in soil column with simulated acid rain. The soil samples were divided into five groups (i.e., A, B, C, D, E). Respectively, the contents of Cr(Ⅵ) were 100mg, 135mg, 170mg, 205mg, 240mg in per kilogram soil. In general, with the leaching time extension, the Cr(Ⅵ) concentration of leachate was declined obviously, repectively, A