探究式教学模式在分析化学综合实验教学中的实践

doi:10.3866/PKU.DXHX202111038

Abstract

Abstract:

This paper introduces the exploration and practice of analytical chemistry experiment teaching mode at University of Science and Technology, China. From the viewpoint of mastering the basic quantitative analysis operation, we aim to improve the students' ability to independently explore the experiment and high-level innovative experiment ability of independent design experiment in analytical chemistry experiments. Inquiry learning method is based on students' problems. In teaching, we use this teaching model to fully mobilize the students' learning enthusiasm. Through the implementation of this teaching model, students continuously improve their ability to find, analyze, and solve problems to achieve the purpose of cultivate students' innovative abilities.

Key words: Inquiry teaching mode, High level innovation experiment ability, Ability to find, analyze and solve problems

MSC2000:

Weilin Li, Hongyu Liu, Gu Jin, Qizhi Yao, Jiao Li, Lingling Li. Practice of Inquiry Teaching Mode in Comprehensive Experimental Teaching of Analytical Chemistry[J].University Chemistry, 2022, 37(4): 2111038.

Ⅰ型		Ⅱ型
基本操作、数据处理、实验习惯		科研创新能力
实验一	基本操作和安全教育	实验一	十二烷基硫酸钠(SDS)在Al₂O₃表面的自组装、表征及用于铜离子的分离、富集和测定
实验二	未知碱的测定	实验一	十二烷基硫酸钠(SDS)在Al₂O₃表面的自组装、表征及用于铜离子的分离、富集和测定
实验三	有机酸摩尔质量测定	实验二	海藻酸盐微胶囊的制备及应用探究
实验四	返滴定法测定明矾中的铝	实验三	碘与水溶性聚合物显色反应研究和分析方法的建立
实验五	碘量法测定铜合金中的铜	实验四	绿色液-固萃取体系分离钴和镍的机理研究
实验六	无汞盐法测定铁矿石中的铁	实验五	含铬废水的绿色处理方法研究
实验七	高锰酸钾法测定白云石中的钙
实验八	硫酸钡均相沉淀历程探究
实验九/十	自主设计实验

实验编号	实验项目	重点与难点	实验类型	学时	课堂教学模式
1	基本操作和安全教育(验证型实验)	移液管、滴定管的规范操作	验证型	8学时	讲授、演示、实操
2	未知碱的测定(验证型实验)	分析天平称量操作、容量瓶定容	验证型	8学时	讲授、演示、实操
3	有机酸摩尔质量测定(验证型实验)	滴定终点判断	验证型	8学时	讲授、演示、实操
4	返滴定法测定明矾中的铝(验证型实验)	样品处理、pH控制	验证型	8学时	讲授、演示、实操
5	碘量法测定铜合金中的铜(验证型实验)	碘的氧化和挥发的控制	验证型	8学时	讲授、演示、实操
6	无汞盐法测定铁矿石中的铁(验证型实验)	亚锡离子量的控制、防止亚铁离子被氧气氧化	验证型	8学时	讲授、演示、实操
7	高锰酸钾法测定白云石中的钙(综合实验)	晶形沉淀的制备、分离	综合型	8学时	讲授、演示、实操
8	硫酸钡均相沉淀历程探究(综合探究实验)	通过正交实验条件的设计探究反应机理	综合探究型	8学时	讨论、演示、实操探究
9/10	自主设计实验(设计实验)	设计方案的可行性	设计型	16学时	学生汇报设计报告、教师同行点评、实操、结果汇报

编号	实验项目	重点与难点	实验类型	学时	课堂教学模式
1	SDS在Al₂O₃表面的自组装、表征及用于铜离子的分离、富集和测定	自组装原理	综合探究型	16学时	讨论、演示、实操、总结分析、进一步探究
2	海藻酸盐微胶囊的制备及应用探究	微胶囊的可控制备	综合探究型	16学时	讨论、演示、实操、总结分析、进一步探究
3	碘与水溶性聚合物显色反应研究和分析方法的建立	定量分析方法的建立	综合探究型	16学时	讨论、演示、实操、总结分析、进一步探究
4	绿色液-固萃取体系分离钴和镍的机理研究	液固萃取机理	综合探究型	16学时	讨论、演示、实操、总结分析、进一步探究
5	含铬废水的绿色处理方法研究	设计方案的可行性、绿色化	设计型	16学时	汇报设计报告、教师同行点评、实操、结果汇报

V(Cu²⁺标液)/mL	吸光度A
V(Cu²⁺标液)/mL	pH = 2.65	pH = 3.34	pH = 4.44
0	0	0	0
0.2	0.013	0.057	0.059
0.4	0.022	0.103	0.112
0.6	0.03	0.156	0.16
0.8	0.045	0.193	0.212

pH	吸附后溶液的吸光度A
1	0.002
1.45	0.005
2.22	?0.016
3	0.01

Practice of Inquiry Teaching Mode in Comprehensive Experimental Teaching of Analytical Chemistry

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