大学化学 >> 2020, Vol. 35 >> Issue (9): 83-88.doi: 10.3866/PKU.DXHX201908054

化学实验 上一篇    下一篇

基于手机光线传感器为检测器的简易光度计的自组装设计

刘丰俊, 吴子瀚, 侯伯尚, 董志强(), 翁玉华, 潘蕊, 许振玲, 张春艳, 吕银云, 欧阳小清, 阮婵姿   

  • 收稿日期:2019-08-30 录用日期:2019-09-24 发布日期:2019-11-04
  • 通讯作者: 董志强 E-mail:dzq8212@163.com
  • 基金资助:
    2018年度厦门大学教学改革研究项目(JG20180132);国家基础科学人才培养基金项目(J1310024);2017年福建省本科高校教育教学改革研究项目(FBJG20170295);2018年福建省本科高校教育教学改革项目(FBJG20180097)

Design and DIY of Simple Photometer Based on the Light Sensor of Cellphone

Fengjun Liu, Zihan Wu, Boshang Hou, Zhiqiang Dong(), Yuhua Weng, Rui Pan, Zhenling Xu, Chunyan Zhang, Yinyun Lü, Xiaoqing Ouyang, Chanzi Ruan   

  • Received:2019-08-30 Accepted:2019-09-24 Published:2019-11-04
  • Contact: Zhiqiang Dong E-mail:dzq8212@163.com

摘要:

利用手机光线传感器作为检测器搭建了一套可用于定量分析实验的简易光度计,将其用于邻二氮菲分光光度法测定铁的实验,进行了5次平行实验,每次实验拟合直线的R2值在0.999左右,待测样品中铁含量的RSD值为2.81%。将简易光度计用于邻二氮菲分光光度法测定铁的实验并与分光光度法进行对比,待测物铁含量分别为5.11和4.94 μg·mL-1。利用手机光线传感器作为检测器的自组装光度计实验,简单、方便、准确、易于实现,可替代传统的分光光度计;通过搭建简易光度计并进行测定实验,有利于增强学生对分光光度计的结构和原理的理解,激发学生的学习兴趣,提高实验教学的质量。

关键词: 光度计, 自主搭建, 手机光线传感器

Abstract:

By using light sensors of the cellphone, we build a simple photometer which can be used in quantitative analysis experiments. We have performed 5 replicate measurements of iron with phenanthroline to verify reproducibility and stability. We find the absorbance of the sample has a good linear relationship with the concentrations of iron with a R2 value around 0.999 and the RSD of 2.81%. The result is 4.94 μg·mL-1 with spectrophotometer and 5.11 μg·mL-1 with our photometer. The photometer is simple, convenient, accurate and realistic by using a phone as detector, which can replace the traditional spectrophotometer in the laboratory class. The students can enhance their understanding of the structure and principle of spectrophotometer by the DIY photometer experiment.

Key words: Photometer, Self-built, Light sensor of cellphone

MSC2000: 

  • G64