学科交叉视域下高锰酸钾法测定水样中化学需氧量实验的设计与实践

doi:10.3866/PKU.DXHX202303036

Abstract

Abstract:

The cultivation of comprehensive talents in the field of modern engineering requires interdisciplinary integration. Using interdisciplinary integration as the starting point, reform and practice of experimental teaching was conducted in the inorganic and analytical chemistry experiment course. Using the tap water and domestic sewage in the campus as the object of this study, the chemical oxygen demand was measured using the potassium permanganate method. The experimental aims were to improve the interdisciplinary thinking, data calculation, and practical problem-solving abilities of the students and to enhance their awareness of environmental protection, which is desirable for students majoring in chemistry, environmental engineering, and resource cycle science and engineering. The questionnaire revealed that students and teachers gave a high evaluation to the experimental content, and the experiment achieved good teaching practice results.

Key words: Chemical oxygen demand, Potassium permanganate method, Inorganic and analytical chemistry experiment, Interdisciplinary integration, Experimental teaching reform

Xiaohong Liu, Shu Li, Shihai Ye, Lanlan Lou. Design and Practice of the Experiment on the Determination of Chemical Oxygen Demand in Water Samples by Potassium Permanganate Method under the Interdisciplinary Perspective[J].University Chemistry, 2023, 38(11): 148-154.

Figures/Tables 5

References 21

1	冯华杰; 孙振范; 崇太. 化学教育, 2022, 43 (18), 71.
2	刘文晶; 刘晓真; 王丹; 张水合; 王育华. 实验室科学, 2022, 25 (5), 127.
3	王寅; 沈成君; 高强; 杜锐. 实验技术与管理,, 2021, 38 (12), 203.
4	田东亮; 钱建刚; 翟锦; 闻利平. 实验室研究与探索,, 2022, 41 (2), 219.
5	刘艳玲; 阴彩霞. 大学化学, 2022, 37 (7), 2201028.
6	田东亮. 大学化学, 2022, 37 (2), 2105031.
7	高明慧. 实验室科学, 2016, 19 (5), 137.
8	张扬. 现代测量与实验室管理, 2016, 24 (5), 68.
9	张树永; 张剑荣; 陈六平. 大学化学, 2016, 31 (9), 1.
10	房川琳; 熊庆; 苏燕. 实验技术与管理, 2021, 38 (1), 28.
11	倪正民. 广州化工, 2020, 48 (12), 141.
12	刘宇昂; 刘晓红; 李姝; 叶世海; 李国然; 言天英. 大学化学, 2023, 38 (9), 227.
13	陈红云. 实验科学与技术, 2021, 19 (4), 126.
14	中国环保产业, 2022, No. 9, 100.
15	单树楠; 李娴; 张雷; 张昉. 实验室研究与探索, 2021, 40 (11), 145.
16	魏琴; 盛永丽. 无机及分析化学实验, 第2版北京: 科学出版社, 2018, 138
17	中华人民共和国卫生部. GB/T 5750.7–2006生活饮用水标准检验方法有机物综合指标. 北京: 中国标准出版社, 2007.
18	李厚金; 石建新; 邹小勇. 基础化学实验, 第2版北京: 科学出版社, 2015, 195
19	张立庆; 李菊清; 俞远志. 无机及分析化学实验, 杭州: 浙江大学出版社, 2011, 131.
20	黄翠红. 山东化工, 2022, 51 (22), 148.
21	邱晓航; 李一峻; 韩杰; 尚贞锋. 基础化学实验, 第2版北京: 科学出版社, 2017, 161

实验序号	无机化学实验	实验序号	分析化学实验
1	硫酸铝钾的制备	6	酸碱滴定操作练习
2	氯化钠的提纯	7	有机酸摩尔质量的测定
3	硫酸亚铁铵的制备	8	天然水总硬度的测定
4	碳酸钠的制备	9	返滴定法测未知物中的铝含量
5	三草酸合铁酸钾的制备	10	过氧化氢含量的测定
		11	重铬酸钾法测可溶性铁样品中的铁含量

m_KMnO4/g	m_{1, Na2C2O4}/g	V_KMnO4/mL	c_KMnO4 ^①/(mol∙L⁻¹)	$\bar{c}_{\mathrm{KMnO}_4} $/(mol∙L⁻¹)	相对平均偏差/%
0.8	0.1577	46.70	0.02520	0.02517	0.1457
	0.1548	45.86	0.02519
	0.1634	48.56	0.02511
1.6	0.1848	27.40	0.02013	0.02016	0.5126
	0.1818	27.10	0.02003
	0.1592	23.40	0.02031

$ {{\stackrel{\mathrm{-}}{{c}}}_{\text{KMnO}}}_{\text{4}}\text{/} $(mol∙L⁻¹)	$ {\text{m}}_{\text{2, }{\text{Na}}_{\text{2}}{\text{C}}_{\text{2}}{\text{O}}_{\text{4}}} $/g	$ {{c}}_{{\text{Na}}_{\text{2}}{\text{C}}_{\text{2}}{\text{O}}_{\text{4}}} $/(mol∙L⁻¹) ^②	V₁/mL	$ {V}_{{\mathrm{N}\mathrm{a}}_{2}{\mathrm{C}}_{2}{\mathrm{O}}_{4}} $/mL	V₂/mL	COD/(mg∙L⁻¹)	$ \stackrel{\mathrm{-}}{\text{COD}}\text{/} $(mg∙L⁻¹)	相对平均偏差
0.02016	0.3546	0.01059	1.00	25.00	4.40	4.742	4.850	2.962
					4.40	4.742
					4.41	5.065
	0.6294	0.01879	1.00	25.00	8.50	5.792	6.007	4.772
					8.52	6.437
					8.50	5.792
			5.00	25.00	4.51	6.115	6.975	8.220
					4.55	7.405
					4.55	7.405
			10.00	30.00	1.55	11.79	12.11	7.102
					1.60	13.40
					1.53	11.14
	1.8082	0.05398	10.00	25.00	16.90	4.006	3.791	7.562
					16.88	3.361
					16.90	4.006

题序	问卷内容	评价
Q1	通过本实验，您对环境监测水样污染程度重要指标之一的化学需氧量知识的理解程度	10分	9分	8分		7分	6分	5分		4分	3分	2分		1分	0分
Q2	本实验是否可以帮助您掌握高锰酸钾标准溶液的配制以及标定方法？	非常有帮助			有帮助				一般				没有帮助
Q3，Q’2	您认为本实验在培养具有环境与化学学科知识学生方面的作用进行打分	10分	9分	8分		7分	6分	5分		4分	3分	2分		1分	0分
Q4	请您结合实践情况，对进行了氧化还原滴定分析方法中的高锰酸钾法测定水样中化学需氧量实验后，自己对此实验原理和方法的掌握程度进行打分	10分	9分	8分		7分	6分	5分		4分	3分	2分		1分	0分
Q5	学习本实验后，请对您掌握基准物质的特性情况进行打分	10分	9分	8分		7分	6分	5分		4分	3分	2分		1分	0分
Q6，Q’4	结合本实验操作过程，请您对本实验提高学生分析与解决问题能力方面打分	10分	9分	8分		7分	6分	5分		4分	3分	2分		1分	0分
Q7，Q’5	本实验对学生动手操作能力以及对实验现象观察能力的提高是否有帮助？	非常有帮助			有帮助				一般				没有帮助
Q8	本实验是否有助于学生团队合作能力的提高？	非常有帮助			有帮助				一般				没有帮助
Q9，Q’3	本实验是否有助于学生提高对实验数据的记录、归纳、分析及处理能力？	非常有帮助			有帮助				一般				没有帮助
Q10，Q’1	请您对本实验的整体内容以及教学过程进行打分	10分	9分	8分		7分	6分	5分		4分	3分	2分		1分	0分

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Design and Practice of the Experiment on the Determination of Chemical Oxygen Demand in Water Samples by Potassium Permanganate Method under the Interdisciplinary Perspective

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