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Demonstrating Basic Properties and Application of Polarimetry Using a Self-Constructed Polarimeter.
Journal of Chemical Education ( IF 2.5 ) Pub Date : 2020-06-30 , DOI: 10.1021/acs.jchemed.9b00763 Lise Kvittingen 1 , Birte Johanne Sjursnes 2
Journal of Chemical Education ( IF 2.5 ) Pub Date : 2020-06-30 , DOI: 10.1021/acs.jchemed.9b00763 Lise Kvittingen 1 , Birte Johanne Sjursnes 2
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An easily constructed and inexpensive polarimeter with an optical rotation angle resolution of about 0.5° is presented. It is made from small pieces of polarizing film, 2 LEDs, a protractor, and a few wires, all held in place with plastic interlocking toy bricks, such as Lego bricks. The instrument was used to demonstrate the optical rotation of plane polarized light as a function of concentration, path length, temperature, and wavelength, and to determine enantiomeric excess in solutions of arabinose, the amount of limonene in citrus ski wax remover, and optical rotations of various types of honeys and essential oils. Results were comparable to values obtained on a commercial scientific instrument, and with literature values.
中文翻译：
演示使用自建旋光仪的旋光仪的基本特性和应用。
提出了一种容易构造且便宜的旋光仪，其旋光角分辨率约为0.5°。它是由一小片偏光膜，两个LED，一个量角器和几根电线制成的，所有这些电线都用塑料互锁玩具砖（例如，乐高积木）固定在适当的位置。该仪器用于证明平面偏振光的旋光度与浓度，光程，温度和波长的关系，并确定阿拉伯糖溶液中的对映体过量，柑橘类除蜡剂中柠檬烯的含量以及旋光度各种类型的蜂蜜和精油。结果与在商业科学仪器上获得的值相当，并具有文献价值。
更新日期：2020-08-11
中文翻译：
演示使用自建旋光仪的旋光仪的基本特性和应用。
提出了一种容易构造且便宜的旋光仪，其旋光角分辨率约为0.5°。它是由一小片偏光膜，两个LED，一个量角器和几根电线制成的，所有这些电线都用塑料互锁玩具砖（例如，乐高积木）固定在适当的位置。该仪器用于证明平面偏振光的旋光度与浓度，光程，温度和波长的关系，并确定阿拉伯糖溶液中的对映体过量，柑橘类除蜡剂中柠檬烯的含量以及旋光度各种类型的蜂蜜和精油。结果与在商业科学仪器上获得的值相当，并具有文献价值。
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