Na_2CO_3溶液及淀粉溶液的浓度与折射率关系的研究  

Relationship Between Concentration and Refractive Index of Na_2CO_3 Solution and Starch Solution

作　　者：彭琪[1] 张志伟[1,2,3] 

机构地区：[1]中北大学信息与通信工程学院,山西太原030051 [2]中北大学电子测试技术重点实验室,山西太原030051 [3]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《中北大学学报（自然科学版）》2013年第3期336-339,共4页Journal of North University of China(Natural Science Edition)

基　　金：山西省自然科学基金资助项目(2012011010-1)

摘　　要：根据洛伦磁电子理论、朗伯定律以及比尔定律,提出了溶液在一定浓度范围内其折射率与浓度的对应关系的理论模型.实验主要利用阿贝折射仪测量研究浓度与折射率关系,结合线性最小二乘法及图解法,建立回归方程,得到了Na2CO3溶液以及淀粉溶液的浓度与折射率关系的经验公式,估计了用阿贝折射仪测量两溶液的合适浓度范围.理论模型的实验结果与实际测量的结果误差都在5%以内,所得经验公式对生产和实验工作具有参考价值.According to Lorentz theory of electrons, Lambert law and Beerrs law, a theoretical model of the corresponding relationship between the solution concentration and its refractive index in a certain concentration range was proposed. The experiment mainly used Abbe refractometer to study the relationship between concentration and refractive index, combining with the linear least squares method and graphical method. The regression equation was established. The experimental results indicate that an empirical formula of the relationship between the concentration and the refractive index of the Na2CO3 solution and starch solution is obtained. The suitable measuring concentration range of the two solutions by the Abbe refractometer is estimated. The error of the experimental results of the theoretical model and the results of actual measurement is within 5%. These empirical formulas have an important reference value in the production and experimental work.

关 键 词：阿贝折射仪 溶液浓度 折射率 最小二乘法 

分 类 号：O435[机械工程—光学工程]