The paper studies the adsorption of the montmorillonite to heavy metal ions like Sr, Cs and Pb in different conditions, and discusses the effect of pH value and concentration of heavy metal ion on adsorption through the methods of AAS, XRD. The results show that the effects of pH value, concentration of heavy metal ions are relevant to ion species, different ions varying differently. The best pH value for Sr ion is 4, and optimal concentration 0.4 g/L; the best pH value for Cs ion is 4, and optimal concentration 1.0g/L; the best pH value for Pb ion is 8, and optimal concentration 0.8 g/L.%研究了蒙脱石在不同条件下对Sr、Cs、Pb等重金属离子的吸附效果,并通过AAS、XRD等方法探讨了pH值、重金属离子浓度对吸附效果的影响.结果表明:pH值、重金属离子浓度的影响与离子种类有很大关系,不同离子之间的影响差别很大.Sr离子的最佳pH值为4,最佳质量浓度为0.4g/L；Cs离子的最佳pH值为4,最佳质量浓度为1.0g/L;Pb离子的最佳pH值为8,最佳质量浓度为0.8g/L.
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