大学化学 >> 2021, Vol. 36 >> Issue (2): 1912054.doi: 10.3866/PKU.DXHX201912054

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本科生自主设计实验探究和实践——含铬废水的处理和分析

范天骄1, 姚奇志1,2(), 金谷1   

  1. 1 中国科学技术大学化学与材料科学学院, 合肥 230026
    2 化学国家级实验教学示范中心(中国科学技术大学), 合肥 230026
  • 收稿日期:2019-12-18 录用日期:2020-02-06 发布日期:2020-02-24
  • 作者简介:姚奇志, Email: qzyao@ustc.edu.cn
  • 基金资助:
    安徽省级重点教研项目(2018jyxm1021)

Exploration and Practice of Undergraduate Self-Design Experiments: Based on the Disposal and Analysis of Wastewater Containing Chromium Ion

Tianjiao Fan1, Qizhi Yao1,2(), Gu Jin1   

  1. 1 School of Chemistry and Materials Science, University of Science and Technology of China, Hefei 230026, China
    2 National Demonstration Center for Experimental Chemistry Education(University of Science and Technology of China), Hefei 230026, China
  • Received:2019-12-18 Accepted:2020-02-06 Published:2020-02-24

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摘要：

自主设计型实验是我校分析化学实验教学体系的重要环节之一。本文以分析化学实验教学过程中产生的含铬废水为处理对象。要求学生通过自主查阅文献、设计实验方案、分析实验方案的可行性，再进行实验探究，并对实验结果进行综合分析。该教学过程的实施，不仅培养了学生分析和解决复杂问题能力，而且培养了他们的创新思维意识。

关键词: 含铬废水, 自主设计实验, 可行性分析, 重铬酸钾晶体, 综合实验能力, 开放性实验教学

Abstract:

Self-design experiment is one of the important links in the teaching system of analytical chemistry laboratory in our university. In this paper, the chromium-bearing wastewater produced in the teaching process of analytical chemistry lab class is taken as the treatment object. Students are required to independently consult the literature, design their experimental schemes, and evaluate the feasibility of their schemes. On this basis, the self-design experiments are carried out, and the harvested results are analyzed and evaluated. The implementation of the teaching process trains not only the students' ability to analyze and solve problems, but also their innovative thinking consciousness.

Key words: Wastewater containing chromium ion, Self-design experiment, Feasibility analysis, Potassium dichromate crystal, Comprehensive experimental ability, Open laboratory teaching