溶液表面张力与浓度关系模型的计算与研究  

The calculation and study of the model on the solution surface tensionand its concentration

作　　者：黄雪征[1] 张磊[1] 

机构地区：[1]南阳理工学院土木工程学院,河南南阳473004

出　　处：《计算机与应用化学》2012年第8期991-994,共4页Computers and Applied Chemistry

基　　金：河南省教育厅科学技术重点研究项目(12B150020);南阳理工学院物理化学精品课程建设(No:NIT2006JPCK10)

摘　　要：溶液表面张力和浓度关系模型的正确选择对提高表面张力测定实验数据的计算结果的准确度具有重要的意义。本文首先介绍了非线性模型参数确定的计算原理,然后介绍了表面张力测定实验数据处理中饱和吸附量和分子横截面积的计算方法,通过VB研制的软件对一组实验数据进行了计算,从理论分析和实例验证2个角度对4种比较典型的模型进行了研究,研究表明:在低浓度区域,适合采用对数模型,在当溶液浓度较高时,适合采用指数模型。本文研制的表面张力计算软件不仅可用于物化实验教学,也可作为研究表面张力和溶液浓度关系的一个计算工具。The correct selection of the model on the solution surface tension and its concentration is important to improve the accuracy of the calculation results in the surface tension experiment. Firstly, the algorithm principle on calculating the parameters of the nonlinear model was introduced and then the calculating method on the saturated adsorption amount and molecular cross-sectional area was introduced, secondly, a set of experimental data was calculated by using the software developed by visual basic language and the typical four models were studied from theoretical analysis and example conformation. The results showed the logarithmic model was suitable for the low concentration solution and the index model was suitable for the high concentration solution. The software on calculating the solution surface tension not only can be used in the physical chemistry experiment teaching, but also it can be used as a computational tool in studying the relationship between the solution surface tension and the solution concentration.

关 键 词：模型 非线性拟合 表面张力 表面吸附量 分子横截面积 溶液浓度 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论] TQ015.9[自动化与计算机技术—计算机科学与技术]