以培养创新型人才为导向的基础分析化学实验教学改革的探索与应用

doi:10.3866/PKU.DXHX202105056

Abstract

Abstract:

From the perspective of cultivating innovative talents in the new era, this paper expounds the necessity of reforming the teaching method of basic analytical chemistry experiment. In view of the basic analytical chemistry experiment in college, this paper puts forward the concrete rectification scheme from pre-class preparation, classroom teaching, experimental guidance, after-class discussion and summary to the method of experimental examination at the end of the semester. Compared with the traditional experimental teaching method, the implementation of the new method effectively improves the students' initiative in learning, and cultivates the students' solid experimental skills and innovative ability.

Key words: Cultivation of Innovative talents, Reform of experimental teaching methods, Analytical chemistry experiment

MSC2000:

Lijun Dong, Wei Wang, Dongyu Lü, Jingfeng Lan. Exploration and Application on Experimental Teaching Reform of Basic Analytical Chemistry Guided by Cultivating Innovative Talents[J].University Chemistry, 2021, 36(9): 2105056.

Figures/Tables 6

References 9

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编号	实验名称	学时	编号	实验名称	编号	学时
1	磺基水杨酸铁配位数和稳定常数的测定	4	10	钢铁中Ni含量的测定(丁二酮肟重量法)	10	7
2	荧光光度分析法测定维生素B₂	4	11	甲基橙的合成及解离常数的测定	11	8
3	天然水硬度的测定	5	12	铁氧体法处理含铬废水	12	8
4	天然水高锰酸盐指数的测定	6	13	阿司匹林的合成、鉴定与含量的测定	13	8
5	混合碱的测定(双指示剂法)	6	14	糖精钴的合成和化学式的测定	14	8
6	Cr₂O₇^2-、MnO₄^-混合溶液的分光光度分析	6	15	钴配合物的合成、组成分析及电子光谱测定	15	16
7	铜合金中铜含量的测定(间接碘量法)	6	16	硅酸盐水泥的分析	16	18
8	葡萄糖含量的测定(碘量法)	7	17	实验理论考试	17	2
9	离子交换分离——钴和铁的分离与测定	7

项目	预习思考题
实验原理	等摩尔系列法测定配位数时，当中心离子与配体的摩尔比分别为1 : 1、1 : 2、1 : 3、1 : 4时，在吸光度–组成图中的吸光度最大值对应的横坐标(物质的量分数)分别是多少？光度法测定的最佳波长应如何选择？若在其他波长下测定，对实验结果有何影响？
实验内容	铁与磺基水杨酸在不同酸度下可以形成不同配比的配合物，本实验的酸度如何控制？磺基水杨酸在配位时会释放出H⁺，这是否会改变配合物的配位数？本实验中使用HClO₄的目的是什么？可否用HCl、HNO₃等代替？
实验步骤和操作	光度计的操作流程是什么？样品测定前应如何校准仪器？应如何洗涤及润洗比色皿？如何保护比色皿的透光面？光度实验中参比溶液的作用是什么？应如何选择参比溶液？本实验是否可以用蒸馏水做参比溶液？系列溶液配制完成后，最佳测定顺序是什么？平行两次的测定应如何进行？该实验中，1#、11#的理论测量值应该是多少？若实际测量值与理论值不符，其原因是什么？

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Exploration and Application on Experimental Teaching Reform of Basic Analytical Chemistry Guided by Cultivating Innovative Talents

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