一种测量糖溶液旋光率的新方法和MATLAB分析  

A New Method for Measuring the Specific Rotation of Sugar Solution and MATLAB Analysis

作　　者：余东[1] 向文丽[1] 

机构地区：[1]楚雄师范学院,云南楚雄675000

出　　处：《大学物理实验》2016年第4期89-92,共4页Physical Experiment of College

基　　金：楚雄师范学院科研基金项目(2015kyig008)

摘　　要：利用光学实验中常用的分光计、偏振器和自制的读数盘通过组装搭建形成一种可以用来测量偏转角和旋光率的系统(简称直读式分光计旋光仪)。利用该系统测量了蔗糖旋光率,与传统的WXG-4旋光仪比较,实验结果的相对误差小于0.3%。实验现象明显,读数方便快捷。通过MATLAB分析了WXG-4型旋光仪和自制旋光仪实验数据,发现两种数据相似度极高。该自主改装的"直读式分光计旋光仪"可以作为一种测量糖溶液旋光率的新方法。Using the spectrometer,polarizer and self-made reading disc,a new system is established to measure the angle of rotation and specific rotation( named as Direct-reading-spectrometer polarimeter). This system is applied to measure the specific rotation of sugar. The result shows that the relative error is smaller than 0. 3%compared with the traditional WXG-4 polarimeter. The experimental phenomenon is clear,and the reading system is simple and convenient to use. The results measured by self-made and WXG-4 polarimeters analyzed by using MATLAB are quite similar. This indicates that the self-made system provides a new way to measure the specific rotation of sugar solution.

关 键 词：直读式分光计旋光仪 MATLAB分析 旋光率 

分 类 号：O436.3[机械工程—光学工程]