摘要
传统的“丙酮碘化反应”实验中不可避免地存在盐酸挥发导致的腐蚀和刺激性,以及分光光度测试时的温度和时间与实际反应过程不一致等问题。本改进实验针对上述问题,设计了新型玻璃反应器,构建了基于智能手机的比色检测系统,并提出了相应的检测方法。改进后的实验避免了盐酸挥发引起的仪器腐蚀和对人体的刺激,提高了实验数据的准确性,加深了学生对Lamber-Beer定律及其偏移现象的理解。此外,改进后的实验不需要分光光度计即可完成,不但提高了该实验的普及性和趣味性,还为疫情期间开展线上实验教学提供了新的解决思路。
In the traditional“acetone iodination”experiment,there are problems such as corrosion,irritation caused by HCl volatilization,and inconsistent temperature or time between the spectrophotometric test and the actual reaction process.These problems are inevitably encountered and have not been effectively addressed.With a focus on these problems,the improved experiment presented a colorimetric analysis system based on a smartphone and new glass reactor;the test method was also proposed.The improved experiment avoids instrument corrosion,human body stimulation caused by HCl,improves the accuracy of the experimental data,and is helpful for students to gain theoretical and experimental expertise on the Lambert-Beer law and its offset phenomenon.In addition,since a spectrophotometer is not required,the improved experiment is easier to popularize and more interesting.It also provides a new strategy for online experimental teaching under difficult conditions such as the epidemic.
作者
张越
于海英
郝俊生
蒋悦
王子为
黄冰
Yue Zhang;Haiying Yu;Junsheng Hao;Yue Jiang;Ziwei Wang;Bing Huang(National Demonstration Center for Experimental Chemistry Education,School of Chemistry and Chemical Engineering,Shanxi University,Taiyuan 030006,China)
出处
《大学化学》
CAS
2023年第4期7-12,共6页
University Chemistry
基金
山西省高等学校教学改革项目(J2021097,J2020013)
山西省研究生教育教学改革课题(2021YJJG009)。
关键词
丙酮碘化
智能手机
比色法
Acetone iodination
Smartphone
Colorimetry
