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本文采用改进的滴体积法和廷德尔（Ｔｙｎｄａｌｌ）结晶视察法研究了表面活性剂对无机盐水溶液的表面张力和溶液结晶过饱和度的影响．并用电子探针照片分析了硼酸结晶改性前后的晶体生长情况、实验证明；微量的表面活性剂在无机盐饱和溶液中与在纯水中一样，同样具有降低表面张力，增大溶液表面活性的作用；此外，实验还发现，表面活性剂还能极大地改变溶液结晶过饱和度，使溶液的结晶速率发生变化．为此，给出了表面活性剂在无机盐溶液中结晶改性机理的新解释。
In this paper, we investigated the effect of surfactants on the surface tension of inorganic salt solution and the solution supersaturation by using the improved drop volume method and the Tyndall crystallization method. And electron probe photo analysis of boric acid crystal modification before and after the crystal growth, experiments show that; traces of surfactant in the saturated solution of inorganic salts in pure water, the same has to reduce the surface tension and increase the surface activity of the solution In addition, the experiment also found that the surfactant can also greatly change the solution crystal supersaturation, the crystallization rate of the solution changes. For this reason, a new explanation of the mechanism of the crystal modification of surfactants in inorganic salt solution is given.