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研究了重庆3种常见土壤类型和4种钢厂、电厂废渣对磷的等温吸附特性。结果表明,用Langmuir方程能很好地描述这7种基质对磷的等温吸附过程。水稻土、紫色土、黄壤、高炉渣、钢渣、粉煤灰、灰渣的磷最大吸附量分别为147,118,213,3333,2000,2500,2500mg/kg,表面吸附强度因子分别为0.1045,0.1147,0.1018,0.1667,0.0602,0.16,0.0556L/mg,最大缓冲能力分别为15.36,13.53,26.69,555.60,120.50,400.00,138.