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实验研究表明，当电解质离子浓度从极低（０．００１ｍｍｏｌ／ＬＮａＣ１）上升到极高（０．５ｍｏｌ／ＬＮａＣｌ）时，矿物吸附金属离子的能力普遍下降，例外的仅有石英、水云母、ＣａＣＯ３和三水铝矿对Ｐｂ２＋、Ｚｎ２＋离子的吸附，以及水云母对Ｃｕ２＋的吸附和石英对Ｃｒ３＋的吸附。理论研究表明，一方面，电解质ＮａＣｌ的加入，使矿物表面Ｓｔｅｍ层电位发生变化， （－）的绝对值增大，提高了矿物表面吸附离子的能力；另一方面，由于Ｎａ＋离子的竞争吸附和Ｃｌ－离子与溶液中金属离子的配合反应，又减少了矿物对金属离子的吸附能力。这两种相反的作用既取决于矿物本身表面质子化参数却 ｐｋ和 ｐＨ，又与ＮａＣｌ浓度变化有关。
Experimental studies have shown that when the electrolyte ion concentration from very low (0.001mmol / LNaC1) increased to very high (0.5mol / LNaCl), the ability of mineral adsorption of metal ions generally decline, with the exception of quartz, water mica, CaCO3 And Pb2 + and Zn2 + ions in gibbsite, as well as the adsorption of Cu2 + by hydrous mica and quartz on Cr3 + adsorption. Theoretical studies show that on the one hand, the addition of electrolyte NaCl changes the potential of Stem layer on the surface of minerals, and the absolute value of (-) increases, which increases the ability of adsorbed ions on the mineral surface. On the other hand, due to the competitive adsorption of Na + ions and Cl- and metal ions in the solution with the reaction, but also reduce the mineral adsorption capacity of metal ions. The two opposite effects depend on the protonation parameters of the mineral itself but pk and pH, but also on the changes of NaCl concentration.