摘要
通过激光光源、偏振片、光敏电阻和电压传感器搭建了旋光溶液浓度测量系统;利用光敏电阻两端电压变化来测量待测旋光溶液浓度。研究了线偏振光经过不同浓度旋光溶液后振动面偏转程度及其通过检偏器后透射光光强变化对光敏电阻的阻值影响,得到系统测量经验公式。通过该系统测量了光敏电阻两端电压随溶液浓度增加的变化情况,所得测量结果和经验公式相吻合,最大测量百分误差为4.8%。通过实验证明,利用经验公式,该系统能够方便、快速地测量旋光性溶液浓度。
The system was built with laser,photosensitive resistance and voltage sensor to measure the concentration of optical rotatory solution.The deflection degree of linearly polarized light over the liquid and the influence of the light intensity on the voltage of the photosensitive resistance was studied.Based on these,empirical formula for measurement between concentration and voltage was obtained.The concentrations of solution were measured by this system and the results are fitting to the empirical formula well,the maximum percent error is 4.8%.These messages show that this measurement system can be used to measure the concentration of optical rotary solution conveniently and accurately.
作者
袁丹文
苏奕婷
李艺蓉
陈志华
冯卓宏
郑卫峰
YUAN Danwen;SU Yiting;LI Yirong;CHEN Zhihua;FENG Zhuohong;ZHENG Weifeng(College of Physics and Energy,Fujian Normal University,Fuzhou 350117,Chin;National Demonstration Center for Experimental Physics Education,Fujian Normal University,Fuzhou 350117,China)
出处
《实验室科学》
2020年第5期56-58,共3页
Laboratory Science
基金
福建省中青年教师教育科研社科A类项目(项目编号:JAS151251)
福建师范大学教学改革项目及大学生创新创业训练计划(创新训练类)(项目编号:I201903005,cxxl-2019131)。
关键词
浓度测量
旋光溶液
光敏电阻
电压传感器
concentration measure
optical rotation solution
photosensitive resistance
voltage sensor
