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本文研究天然麦饭石固体与海、淡水中锌进行离子交换时，百分交换量随ｐＨ的变化，及一定温度、ｐＨ值下的固液分配等温线。结果表明，淡水中等温线在广泛浓度范围符合Ｌａｎｇｍｕｉｒ方程和Ｆｒｅｕｎｄｌｉｃｈ方程；海水中锌在麦饭石上固液分配等温线可用“三常数”吸着方程描述。百分交换率随ｐＨ值的变化曲线呈“Ｓ”型，此外测定了麦饭石对海、淡水中锌的饱和交换量，并对锌在麦饭石上的作用机理进行了探讨。
In this paper, we studied the change of the percentage of exchangeable amount of natural maifanite solid and seawater and freshwater zinc with pH, and the isotherms of solid-liquid partition under certain temperature and pH. The results show that the isotherm in freshwater conforms to the Langmuir equation and the Freundlich equation in a wide range of concentrations. The solid-liquid partitioning isotherm of zinc in maifanite can be described by the “three constant” sorption equation. The curve of percentage exchange rate with pH value showed “S” type. In addition, the saturated exchange capacity of medical stone for zinc in sea and freshwater was measured, and the mechanism of action of zinc on medical stone was also discussed.