膜压法在自然水体研究中的应用

膜压法在自然水体中的应用较为广泛。文章综述了膜压及膜面积可作为自然水体中有机物含量的表征，也可作为水体受污染程度大小的一种判据。在研究表面膜的表面物理性质与化学组分之间联系的过程中，发现表面膜中有能够主宰表面膜性质的标准物质存在。由于这些标准物质主导了表面膜的表面物理性质，因此。寻找这些标准物质，并将它们的表面物理性质特征化，这也是今后工作中研究的方向。

An Application of Film Pressure Method to Studying Natural Water Body

The application of a film pressure method to natural water body was presented. It was revealed that the film pressure and film size could be used as tokens of the content of organic substances in water body, and could also be used as a criterion of the degree of pollution that the water body suffered. In the course of studying the relationship between surface physical properties and chemical constituents of the surface film, some characteristic substances were found herein. As those substances dominated the surface physical proper- ties of the film,it would therefore be oriented in the future work to find out those substances and characterise their surface physical properties.