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

刘晓红, 李姝, 叶世海, 楼兰兰

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

Xiaohong Liu, Shu Li, Shihai Ye, Lanlan Lou

表2 KMnO₄溶液的标定结果

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