【摘要】 本文报导铀在碱式碳酸锌吸附剂固——液界面分配的台阶型吸附等温线.它有一个“拐点”,两个“平台”.表明铀与碱式碳酸锌的阴离子交换过程是分级进行的.在pH等于7.4的条件下,铀与碱式碳酸锌的交换过程可能是R-OH+[UO₂（OH）₃]??R-UO₂（OH）₃+OH^- 由分级离子交换等温线计算得到交换过程中的热焓变化.作图法求得分级离子交换平衡常数更多还原

【Abstract】 A step-isothem of uranium （Ⅵ） distribution "on the interface of solid-liquid at basic zinc carbonate-solution is studied.It has one "knee" and two "plateaus".It demonstrates that the exchange process of uranium with hydroxyl ions of basic zinc carbonate is carried by stepwiss.Under the ph=7.4, the exchange process can be expressed by R-OH+（UO₂（OH）₃）^-??RUO₂（OH）₃)+OH^- The equilibrium constants and enthalpy change have been culculated.更多还原