大学物理基础实验的拓展应用:探讨牛奶的光学性质  

Extensive Application of the Basic Experiments in College Physics: Study on the Optical Properties of Cow Milk

作　　者：夏伊丁.亚库普 买买提热夏提.买买提 帕尔哈提江.吐尔孙 亚森江.吾甫尔 王振[2] 孙言飞[2] YAQUP Shahi-din;MAMAT Mamatrishat;TUERSUN Paerhatijiang;GHOPUR Yasen-jan;WANG Zhen;SUN Yan-fei(Xinjiang Normal University,Xinjiang Urumqi830054;Xinjiang University,Xinjiang Urumqi830046)

机构地区：[1]新疆师范大学,新疆乌鲁木齐830054 [2]新疆大学,新疆乌鲁木齐830046

出　　处：《大学物理实验》2017年第6期26-29,共4页Physical Experiment of College

基　　金：资助新疆维吾尔自治区高校科研计划重点项目(XJEDU2016I032);新疆大学第四期教改项目(XJU2015JGY62)

摘　　要：牛奶是生活中重要的饮料之一,牛奶光学性质的研究具有重要意义。本文采用紫外-可见吸收光谱法、掠面入射法及法拉第磁光效应原理,分别测出五种不同浓度牛奶的吸光度、折射率、旋光度等光学参数。实验结果显示,随着牛奶样品稀释倍数的增加,吸光度下降。新鲜牛奶的折射率小于四种袋装牛奶的折射率。随着稀释倍数的增加,折射率和旋光度均减小。结果表明,随着牛奶酪蛋白含量的增加,吸光度、折射率和旋光度均增加。Milk is one of the most important beverage in life.Investigation of optical properties of milk are of great significance.In this paper,the absorbance,refractive index,and optical rotation of five different milks were measured by using UV-Vis absorption spectroscopy,grazing incident surface method and Faraday magneto-optical effect principle.The experimental results show that,with the increase of dilution ratio,the absorbance decreases.The refractive index of fresh milk is less than the refractive index of four bagged milk.With the increase of dilution rate,refractive index and optical rotation decreases.The results showed that,with the increase of milk casein content,absorbance,refractive index,and optical rotation increases.

关 键 词：吸光度 旋光度 折射率 

分 类 号：O433.1[机械工程—光学工程]