自动电位滴定快速测定84消毒液中的有效氯含量

doi:10.3866/PKU.DXHX202008051

Abstract

Abstract:

During the outbreak of novel coronavirus pneumonia, 84 Disinfectant has been widely used. It is very important to determine the available chlorine content in 84 Disinfectant. A new method to rapidly determine the available chlorine content in 84 Disinfectant by automatic potentiometric titration was established. Statistically, there is no significant difference in results between automatic potentiometric titration and manual titration. Combined the principles of analytical chemistry and the application to the determination of anti-epidemic material, this experiment has theoretical and practical significance, and can be used as an experiment in analytical chemistry laboratory for sophomore students.

Key words: Automatic potentiometric titration, Rapid determination, 84 Disinfectant, Available chlorine content

Huixiang Li, Jie Lei, Xingwen Sun, Shasha Liu. Rapid Determination of Available Chlorine Content in 84 Disinfectant by Automatic Potentiometric Titration[J].University Chemistry, 2020, 35(12): 49-54.

Figures/Tables 4

References 12

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自动电位滴定			手动滴定
编号	V_{Na₂S₂O₃}/mL	c_{Na₂S₂O₃}/(mol·L⁻¹)	编号	V_{Na₂S₂O₃}/mL	c_{Na₂S₂O₃}/(mol·L⁻¹)
1	10.62	0.1007	1	10.70	0.1000
2	10.62	0.1007	2	10.69	0.1001
3	10.63	0.1006	3	10.69	0.1001
平均值	−	0.1007	平均值	−	0.1001

自动电位滴定			手动滴定
编号	V_{Na₂S₂O₃}/mL	浓度/(g/100 mL)	编号	V_{Na₂S₂O₃}/mL	浓度/(g/100 mL)
1	6.74	4.81	1	6.81	4.83
2	6.75	4.82	2	6.80	4.83
3	6.75	4.82	3	6.78	4.81
4	6.77	4.83	4	6.82	4.84
5	6.75	4.82	5	6.82	4.84
6	6.75	4.82	6	6.79	4.82
7	6.76	4.83	7	6.77	4.80
8	6.76	4.83	8	6.81	4.83
9	6.76	4.83	9	6.79	4.82
10	6.77	4.83	10	6.78	4.81
平均值	–	4.82	平均值	–	4.82

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Rapid Determination of Available Chlorine Content in 84 Disinfectant by Automatic Potentiometric Titration

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