极限活度系数就是指可溶性溶液中所能溶解的溶解质,在它的最小浓度或称最淡的溶液时所能产生的作用的关系。它的测定方法已经有很多文献叙述过,但是只有少数的方法能得到精确数据。现介绍一种改进了的沸点法可以测定准确的极限活度系数(γ~∞)。这项技术应该追索至1925年时苏维托拉斯基的方法,他运用科特雷耳泵(Cottrell pump)的原理设计 The limit activity coefficient refers to the relationship between the solubilizable solute in a soluble solution and its action at its minimum concentration, or the lightest solution. Its method of determination has been described in many documents, but only a small number of methods can get accurate data. An improved boiling point method is introduced to determine the accurate limit activity coefficient (γ ~ ∞). This technique should be traced back to the approach of Svetlogorsk in 1925 by the principle of a Cottrell pump