蔬菜大棚土壤对Pb^(2+)吸附特性

Adsorption Characteristics of Soil in Vegetable Greenhouse towards Pb^(2+)

以固原市清河镇沙窝村和大湾镇大湾村两个地方大棚蔬菜土壤样品为研究对象,采用平衡吸附法研究了两种土壤中铅的吸附特征。结果表明:沙窝大棚蔬菜土壤对铅的吸附能力更强,两处土壤对铅的吸附平衡均可采用Freundlich等温吸附方程来拟合。

Taking the soils from vegetable greenhouse in Shawo village and Dawan village in Guyuan city as study objects ,this article adopts equilibrium adsorption method to analyze the adsorption characteristics of soil towards lead .The results show that the soil in Shawo vegetable greenhouse has a stronger adsorption capacity for Pb2＋ .The two soils＇adsorption equilibrium towards lead can be matched by the Freundlich equation .