大学化学 >> 2024, Vol. 39 >> Issue (7): 354-360.doi: 10.12461/PKU.DXHX202311040

化学实验 上一篇    下一篇

饮用水中高锰酸盐指数(CODMn)测定综合实验设计

潘仲彬1, 黄世杰2, 罗云杰1, 谢洪珍1   

  1. 1 宁波大学材料科学与化学工程学院, 浙江 宁波 315211;
    2 宁波海关技术中心, 浙江 宁波 315048
  • 收稿日期:2023-11-12 录用日期:2024-02-29 发布日期:2024-03-13
  • 通讯作者: 罗云杰, 谢洪珍 E-mail:luoyunjie@nbu.edu.cn;xiehongzhen@nbu.edu.cn
  • 基金资助:
    浙江省课程思政教学研究项目；浙江省“十四五”研究生教育改革项目；宁波大学教研项目(JYXM2024071,JYXM20244073)；宁波大学线上线下混合式课程

Design of a Comprehensive Experiment for Determining Permanganate Index (CODMn) in Drinking Water

Zhongbin Pan1, Shijie Huang2, Yunjie Luo1, Hongzhen Xie1   

  1. 1 School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, Zhejiang Province, China;
    2 Ningbo Customs District Technology Center, Ningbo 315048, Zhejiang Province, China
  • Received:2023-11-12 Accepted:2024-02-29 Published:2024-03-13
  • Contact: Yunjie Luo, Hongzhen Xie E-mail:luoyunjie@nbu.edu.cn;xiehongzhen@nbu.edu.cn

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摘要： 在氧化还原滴定和分光光度法验证性实验的基础上，设计并实施了饮用水中高锰酸盐指数(CODMn)测定的综合创新型实验。实验过程以“学生为中心”，通过两种方法的对比，提高学生的实践创新能力；通过理论与实验相结合、教学与科研相结合，突出传统方法与新方法、验证实验与创新实验、模拟样品与实际样品的区别，体现实验课程的“两性一度”；通过实验中思政元素的挖掘，落实立德树人的根本任务；通过构建过程性评价体系，实现对实验全面、系统的评价，对整个实验教学过程起到了有力的推动作用。本综合创新型实验的开设为分析化学实验教学改革提供了有益的经验探索。

关键词: 高锰酸盐指数, 氧化还原滴定法, 分光光度法, 实验教学

Abstract: Building upon foundational experiments in redox titration and spectrophotometry, this study outlines the design and execution of an innovative, comprehensive experiment framework for determining permanganate index (CODMn) in drinking water. Central to this approach is a student-focused methodology that enhances practical and inventive skills through comparative analysis of two distinct techniques. This process not only bridges gap between theoretical knowledge and experimental practice, but also integrates teaching with research to underscore the distinctions between conventional and novel methods, verified and innovative experiments, and between simulated and actual samples, showing the high order, innovation and challenge of experimental course. By emphasizing the dual nature and degree of experimental coursework and incorporating ideological and political elements, the experiment fulfills the fundamental mission of moral education. Additionally, the establishment of a procedural evaluation system enables a thorough and systematic assessment of the experimental activities, significantly contributing to the pedagogical process. This innovative experiment offers valuable insights in the reform of experimental teaching within the field of analytical chemistry.

Key words: Permanganate index, Redox titration, Spectrophotometry, Experimental teaching