University Chemistry ›› 2021, Vol. 36 ›› Issue (2): 1912020.doi: 10.3866/PKU.DXHX201912020

• Chemistry Laboratory • Previous Articles     Next Articles

Improving the Potentiometric Determination of Fluoride Content in Tea Solution

Weimin Fang1,*(), Yuxiu Wei1, Jiqing Cai1, Haijuan Zhu1, Yeer Yu2, Tong Chen2   

  1. 1 Department of Chemistry, Zhejiang University, Hangzhou 310058, China
    2 Department of Tea Science, Zhejiang University, Hangzhou 310058, China
  • Received:2019-12-02 Accepted:2019-12-04 Published:2019-12-10
  • Contact: Weimin Fang E-mail:fangwm@zju.edu.cn

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Abstract:

The original experimental scheme was further optimized and improved by quantitatively measuring the effects of total ionic strength adjusting buffer, different tea leaves and tea-making water temperature and time. The objective is to enable students to understand the importance of controlling the experimental conditions for determination, so as to further stimulate students' interest in the science and pleasure of chemistry experiments.

Key words: Ion selective electrode, Fluoride content, Experimental improvement