大学化学 >> 2019, Vol. 34 >> Issue (1): 54-57.doi: 10.3866/PKU.DXHX201806029

化学实验 上一篇    下一篇

基于光线传感器的手机光度计设计与应用

奚忠华*(),孔璇凤,余晓冬,章文伟   

  • 收稿日期:2018-06-22 发布日期:2019-01-16
  • 通讯作者: 奚忠华 E-mail:xizh@nju.edu.cn
  • 基金资助:
    江苏省高等教育教改研究课题(2017JSJG089);南京大学"十三五"实验教学改革研究重点课题(SY201703);南京大学2016年度重点教改课题(201614B2)

Design and Application of Mobile-Phone Photometer Based on Light Sensor

Zhonghua XI*(),Xuanfeng KONG,Xiaodong YU,Wenwei ZHANG   

  • Received:2018-06-22 Published:2019-01-16
  • Contact: Zhonghua XI E-mail:xizh@nju.edu.cn
  • Supported by:
    江苏省高等教育教改研究课题(2017JSJG089);南京大学"十三五"实验教学改革研究重点课题(SY201703);南京大学2016年度重点教改课题(201614B2)

摘要:

利用智能手机的光线传感器设计了一款简易光度计,并为其开发了安卓手机应用,可以在线查看样品信号,自动计算吸光度值。此款简易光度计采用了液相色谱紫外检测器的流通池作为样品吸收池,利用光纤传导光信号,可以大幅降低试剂使用量。进行一次测试只需要使用约200 μL样品,有效降低了实验室废液回收量。利用该光度计对铁离子标准溶液进行测定,在测定浓度范围内,吸光度与样品浓度具有良好的线性拟合关系,其中R2=0.9991,可取代化学实验中的传统分光光度计。利用该光度计进行实验可以强化学生对仪器和实验原理的理解,有利于培养创新意识。

关键词: 光度计, 光线传感器, 手机,

Abstract:

By using the light sensor of smartphone, a simple photometer was designed. Also, an Android APP was developed to show the online signal and calculate the absorbance automatically. This photometer uses a flow cell of HPLC UV-detector as sample absorption cell and an optical fiber to transfer the light signal. The mobile-phone photometer can greatly reduce the amount of reagents used. Only 200 μL sample is needed to run a test, which effectively reduces laboratory waste. There is a good linear relationship with R2 value 0.9991 while using the photometer to measure the iron ion standard solution, which means it can replace the traditional spectrophotometer in chemical experiments. Students can enhance their understanding of the instrument principles and inspire their creativity by using this DIY photometer.

Key words: Photometer, Light sensor, Mobile phone, Iron

MSC2000: 

  • G64