Citation: Lingli Zhao, Jiajie Zhang, Xiaofei Xu, Lingling Xi, Yuxiu Wei, Yunhu Tang, Xufeng Lin. Matrix Effects in Potentiometric Method on Fluoride Selective Electrode Analysis[J]. University Chemistry, ;2023, 38(8): 200-208. doi: 10.3866/PKU.DXHX202209058 shu

Matrix Effects in Potentiometric Method on Fluoride Selective Electrode Analysis

Department of Chemistry, Zhejiang University, Hangzhou 310012, China

Corresponding author: Lingli Zhao, ll.zhao@zju.edu.cn
Received Date: 22 September 2022

Experiments on matrix effects in the fluoride selective-electrode-based potentiometric methods were performed to expand students' theoretical knowledge and deepen their understanding of matrix effects in the potentiometric method in the chemistry laboratory course. Complex matrices were simulated by doping ethanol or acetic acid gradiently into a standard solution. Comprehensive and systematic empirical verification and theoretical analysis of the matrix effects were conducted. Moreover, the standard curve and addition methods determining fluoride in different matrices were investigated and compared. The experimental results showed the matrix effects and the characteristics of the different quantitative analysis methods. This study provides students with an enhanced sense of experimental principles and expands their scientific thinking, which eventually helps achieve improved teaching and learning.
- Matrix effect,
- Potentiometric method,
- Ion selective electrode,
- Standard curve method,
- Standard addition method
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