基于PASCO平台的旋光性溶液浓度测量及应用研究  

Study of Measurement and Application of Optically Active Solution Concentration Based on the PASCO Platform

作　　者：时俊仙 涂茹婷 菅婧涵 金宇 郭梦雨 唐亚楠 SHI Junxian;TU Ruting;JIAN Jinghan;JIN Yu;GUO Mengyu;TANG Yanan(School of Physics and Electrical Engineering,Zhengzhou Normal University,Zhengzhou 450044,China)

机构地区：[1]郑州师范学院物理与电子工程学院

出　　处：《大学物理实验》2023年第6期23-28,共6页Physical Experiment of College

基　　金：河南省高等教育教学改革研究与实践项目(2021SJGLX580);河南省教师教育课程改革研究项目(2022-JSJYZD-041);郑州师范学院本科教学改革研究重点项目(JXGGZD-65211448,JXGGZD-65221951);郑州师范学院教师教育课程改革研究重点项目(JSJYZD-001211548,JSJYZD-001221872);郑州师范学院大学生创新训练项目(DCY2022008);郑州地方高校教学改革研究与实践项目(ZZJG-B1009)。

摘　　要：基于PASCO平台设计出测量葡萄糖和蔗糖溶液旋光率和浓度的实验装置,通过激光器、偏振片、光强传感器等分立的装置可以观察到实验光路布局,有助于学生加深对旋光性溶液测量原理的理解。将转动传感器和光强传感器连接到计算机,能够准确找出旋光度和光强极值位置并读取测量值,避免人为操作可能产生的位置不精准和读数偏差。与旋光仪测量相比,结果表明利用PASCO平台分立的装置可以有效地减小误差。在此基础上,该实验装置可拓展应用于实时在线测量及监测流动的旋光性液体浓度。An experimental device for measuring optical activity and concentration of glucose and sucrose solutions was designed based on the PASCO platform.The experimental optical path layout could be observed through discrete devices such as laser,polarizer and light intensity sensor,which helped students to deepen their understanding of the principle of optical activity solution measurement.By connecting the rotation sensor and light intensity sensor to the computer,the optical rotation and light intensity extremes can be accurately located and the measured values can be read,avoiding the possible position imprecision and reading deviation caused by manual operation.Compared with the measurement of gyroscope,the results show that the discrete device using PASCO platform can effectively reduce the error.On this basis,the experimental device can be extended to real-time on-line measurement and monitoring of flowing optically active liquid concentration.

关 键 词：旋光性 液体浓度 PASCO平台 实时在线测量 

分 类 号：O4-33[理学—物理]