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CaCO_3、石英、针铁矿、三水铝矿、高岭土、蒙脱石、水云母等矿物对Ag+、Cu2+、Zn2+、Ni2+、Cd2+、Pb2+和Cr3+金属离子的竞争吸附实验研究表明，在近中性低离子强度溶液中，矿物单位表面积吸附金属离子的大小顺序是：CaCO3＞石英＞水云母＞高岭土＞蒙脱石＞针铁矿＞三水铝矿。这些矿物可分成3组：第一组的矿物有石英、针铁矿和高岭土等1：1层硅酸盐矿物及其他氧化物；第二组为三水铝矿、水镁石和蒙脱石等2:1层硅酸盐矿物；第三组是碳酸盐、硫酸盐、磷酸盐等含氧盐矿物。它们对于金属离子的吸附反应；＞SO－＋Mn+=＞SOM(n-1)+(n=1,2,3）有如下的显平衡常数KM与矿物介电常数ε的关系式：（1）lgk1M=7．813－26.15／ε（2）lgK2M－9．030－26.15／ε（3）lgK3M=11．65－26．15／ε
The competitive adsorption experiments of Ag +, Cu2 +, Zn2 +, Ni2 +, Cd2 +, Pb2 + and Cr3 + metal ions by CaCO_3, quartz, goethite, gibbsite, kaolin, montmorillonite and water mica show that in the near neutral In the low ionic strength solution, the order of the metal ions adsorbed on the unit surface area is CaCO3> quartz> aqua mica> kaolin> montmorillonite> goethite> gibbsite. The minerals can be divided into three groups: the first group of minerals are 1: 1 silicate minerals and other oxides such as quartz, goethite and kaolin; the second group is gibbsite, brucite and montmorillonite 2: 1 layer of silicate minerals; the third group is carbonate, sulfate, phosphate and other oxygenate minerals. Their adsorption reactions for metal ions;> SO- + Mn + => SOM (n-1) + (n = 1,2,3) have the following apparent equilibrium constant KM and the relationship between the dielectric permittivity ε: (1) lgk1M = 7.813-26.15 / ε (2) lgK2M-9.030-26.15 / ε (3) lgK3M = 11.65-26.15 / ε