邻二氮菲测铁的实验教学改进与实践  

Improvement of Laboratory Teaching and Practice of Determination of Iron with Phenanthroline

作　　者：张悦[1] 王晓艳[1] 高素华 Yue Zhang;Xiaoyan Wang;Suhua Gao(School of Chemistry and Chemical Engineering,Tianjin University of Technology,Tianjin 300384,China.)

机构地区：[1]天津理工大学化学化工学院,天津300384

出　　处：《大学化学》2022年第6期72-76,共5页University Chemistry

基　　金：天津理工大学教学改革重点项目(ZD20-09)。

摘　　要：根据近年来学生在教学过程中出现的问题及反馈,将邻二氮菲测铁实验进行教学改进与实践。在原有标准曲线法测定总铁的基础上,增加了Fe^(2+)-邻二氮菲配合物摩尔吸光系数的计算以及未知水样中Fe^(2+)、Fe^(3)+浓度的测定及计算。实验内容的改进,不仅解答了学生的疑问,提高了学生的学习兴趣,而且引导学生主动思考,培养学生解决实际问题的能力。According to the feedback of students and problems in laboratory course in recent years,the improvement of determination of iron with phenanthroline(Phen)is conducted.On the basis of the determination of total Fe with the standard curve,the determination of the molar absorption coefficient of complex compound(Phen-Fe^(3+),Phen-Fe^(2+)),and the concentration of Fe^(2+)and Fe^(3+)of water samples are supplemented.The improvement of experimental content,can not only solve the doubt and enhance students’interests,but also guide students to actively think and cultivate their ability to solve practical problems.

关 键 词：分析化学实验 邻二氮菲 教学改进 

分 类 号：G64[文化科学—高等教育学] O6[文化科学—教育学]