Colorimetric Titration App在中学化学实验中的应用——比色法测定补铁剂中铁的含量  

Applicating Colorimetric Titration App to High School Chemistry Experiment:Determination of Iron Content in Iron Supplement by Colorimetry

作　　者：毛斐滢 刘卫东[2] 竺丽英[1] MAO Fei-Ying;LIU Wei-Dong;ZHU Li-Ying(College of Teacher Education,Zhejiang Normal University,Jinhua 321004,China;College of Chemistry and Materials Science,Zhejiang Normal University,Jinhua 321004,China)

机构地区：[1]浙江师范大学教育学院,浙江金华321004 [2]浙江师范大学化学与材料科学学院,浙江金华321004

出　　处：《化学教育（中英文）》2024年第15期106-111,共6页Chinese Journal of Chemical Education

摘　　要：Colorimetric Titration App(简称CTA)是一款免费的手机智能软件,将包含标准溶液和待测溶液的图片上传至该软件,可自动读取溶液的各种颜色参数值,并绘制颜色参数与浓度的拟合曲线,实现对待测溶液浓度的精确测定。介绍了该软件的主要界面,并以“比色法测定补铁剂中铁的含量”为例,探索利用CTA的数字图像比色法在中学化学实验中的应用。与其他方法相比,该方法操作简便,成本低廉,准确度高,测得铁含量的误差在2%以内,将其应用于高中化学实验,有助于促进信息技术与化学教学的深度融合。Colorimetric Titration App(abbreviated as CTA) is a free smartphone application. By uploading the images of standard solution and solution to be tested to this software, the values of various color parameters of the solution can be read and analyzed automatically. The fitting curve of color parameters and concentration can be drawn, so as to realize the accurate determination of the concentration of the solution to be tested. The study introduces the main interface of the software, and explores the application of digital image colorimetry using CTA in senior high school chemistry experiment of “determination of iron content in iron supplement by colorimetry”. Compared with other methods, this method is easy to operate, inexpensive, and highly accurate, with an error in measuring iron content of less than 2%. Applying it to chemistry experiments in senior high school can help to promote the deep integration of information technology and chemistry instruction.

关 键 词：高中化学 Colorimetric Titration App 数字图像比色法 实验改进 智能手机 

分 类 号：G633.8[文化科学—教育学] G434