Citation: Xiaoyan Wang, Dongmei Dai, Runze Liu, Hongkai Bu, Yanjie Wang, Huiping Li, Minghua Li, Hongtao Gao. Determination of Fluoride Content in Tea Leaves and Tea Water by Ion Selective Electrode Method[J]. University Chemistry, ;2022, 37(5): 211104. doi: 10.3866/PKU.DXHX202111041 shu

Determination of Fluoride Content in Tea Leaves and Tea Water by Ion Selective Electrode Method

College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong Province, China

Corresponding author: Hongtao Gao, gaohtao@qust.edu.cn
Received Date: 14 November 2021

The classical basic chemistry experiment "determination of micro-quantitative fluorine in water with ion-selective electrode method" was improved to "determination of fluorine content in tea and tea water with ion-selective electrode method". The experimental contents for the "determination of fluorine in tap water" were extended to the "determination of fluorine in tea and tea water, fluorine leaching rate of tea leaves." The effects of tea:water ratio, temperature, brewing time, and tea powder size on the fluorine leaching rate of tea leaves were also investigated. The fluoride content in five kinds of representative tea samples showed that drinking dark tea caused the risk of excessive fluoride intake. In addition, the experiment was further expanded and extended to the ion selective electrode method and other detection methods of trace fluoride. The introduction of research content and grouping experiments was more beneficial to cultivate students' scientific research thinking and spirit of unity and cooperation. Exploratory and challenging experimental contents improved students' ability to innovate and solve practical problems. The infiltration of tea and general health knowledge in students' lives, enhanced their health consciousness. This experiment was rich in content, interesting, easy to operate and promote, and thus suitable for junior undergraduates.
- Improvement of classical experiment,
- Ion-selective electrode method,
- Tea,
- Fluorine content,
- Innovative talent cultivation
1. [1]
2. [2]
3. [3]
4. [4]
  Gao, H. J.; Zhao, Q.; Zhang, X. C.; Wan, X. C.; Mao, J. D. J. Agric. Food Chem. 2014, 62 (10), 2313.
5. [5]
6. [6]
7. [7]
8. [8]
9. [9]
10. [10]
11. [11]
12. [12]
1. [1]
  Yongwen Shen , Wei Wang , Qinghua Feng , Jingfeng Lan , Guangnong Lu , Xiaolong Li , Liu Yang , Xiangyang Xu , E Yu , Li Wu , Xinping Hui , Yongmin Liang . Continuous Construction of National Demonstration Center for Experimental Education Based on Innovative Talent Training. University Chemistry, 2024, 39(7): 172-179. doi: 10.12461/PKU.DXHX202405083
2. [2]
  Lihong Niu , Huaping Xu , Ying Yu . Synergizing Ideological and Political Education with Professional Education: Overcoming Challenges in Cultivating Innovative Talents in Basic Sciences under New Circumstances. University Chemistry, 2024, 39(6): 7-11. doi: 10.3866/PKU.DXHX202311090
3. [3]
  Jiali Lin , Shuting Wu , Cheng Zheng , Zian Lin , Qiaohua Wei , Shoutian Zheng . Construction and Practice of National Chemical Experiment Teaching Demonstration Center in Local Universities under the Background of “Double First-Class”. University Chemistry, 2024, 39(7): 129-139. doi: 10.12461/PKU.DXHX202405043
4. [4]
  Wei Zhao , Ying Gan , Xihe Bi . Nurturing with Dedication: Springing into Excellence in Chemistry Postgraduate Education at Northeast Normal University. University Chemistry, 2024, 39(6): 29-36. doi: 10.3866/PKU.DXHX202312032
5. [5]
  Jing Yan , Haiyuan Wang , Jing Chang , Fubao Xing , Zhen Zhang , Mingyue Chen , Xiaofeng Li , Yu Liu , Yi Li , Xia Feng . Exploration and Practice in the Teaching of Chemistry Research Training Course. University Chemistry, 2024, 39(10): 236-241. doi: 10.12461/PKU.DXHX202404108
6. [6]
  Dongxue Han , Zhuoyong Li , Hanbo Zou , Xu Wu , Yang Yuan , Hongbin Li . Research on Innovative Experimental Teaching to Cultivate Top Talents. University Chemistry, 2024, 39(7): 230-236. doi: 10.12461/PKU.DXHX202406094
7. [7]
  Haibo Zhang , Yuwen Liu , Qiong Ding , Chi Huang , Faqiong Zhao , Jinping Zhou . The Construction of National Demonstration Center for Experimental Chemistry Education and the Practice of Top-Notch Innovative Talent Cultivation. University Chemistry, 2024, 39(7): 82-92. doi: 10.12461/PKU.DXHX202405012
8. [8]
  Weihong Li , Hao Zhao , Qihan Zhang , Tian Li , Yingxia Wang . Promoting the Development of the National Demonstration Center for Experimental Chemistry Education to Foster Innovative Talent. University Chemistry, 2024, 39(7): 153-159. doi: 10.12461/PKU.DXHX202405064
9. [9]
  Yan Li , Fei Ding , Jielun Yan , Qingyang Zhou , Zhe Wang , Yifan Shi , Jing Wang , Anna Tang . Improving Instrumental Analytical Chemistry Laboratory Teaching: Developing a Bilingual Classroom to Cultivate Innovative Talents. University Chemistry, 2025, 40(7): 83-89. doi: 10.12461/PKU.DXHX202409059
10. [10]
  Jiaojiao Yu , Bo Sun , Na Li , Cong Wen , Wei Li . Improvement of Classical Organic Experiment Based on the “Reverse-Step Optimization Method”: Taking Synthesis of Ethyl Acetate as an Example. University Chemistry, 2025, 40(3): 333-341. doi: 10.12461/PKU.DXHX202405177
11. [11]
  Changwei Dun , Xijun Zhang , Qianyi Zhao , Yuming Guo . Promoting the Construction of the Chemical Experiment Teaching Center and Forging a New Era in Cultivating Innovative Talents. University Chemistry, 2024, 39(7): 211-217. doi: 10.12461/PKU.DXHX202405139
12. [12]
  Pingping Zhang , Dong Xiao , Shiyu Zhou , Chuanqiu Tang . Research and Innovative Practice on the Reform of Instrument Analysis Experimental Teaching System for Talent Cultivation in Modern Industry. University Chemistry, 2025, 40(4): 232-238. doi: 10.12461/PKU.DXHX202405179
13. [13]
  Wenyuan Hu , Jichuan Huo , Guoqing Zhong , Binyao Liu , Qiying Jiang , Qiulin Deng , Dingming Yang , Tinghong Zhang , Hongbo Li , Pingping Zhu . Construction and Exploration of an Innovative Talent Training Practical Curriculum System for Applied Chemistry at Local Universities. University Chemistry, 2025, 40(7): 55-61. doi: 10.12461/PKU.DXHX202409075
14. [14]
  Qun Wang , Yang Li , Songtao Lu , Hongjun Kang , Yang Hong , Xiaohong Wu . Exploration for the Chemistry Innovative Talent Cultivation from an Interdisciplinary Perspective. University Chemistry, 2024, 39(8): 132-135. doi: 10.3866/PKU.DXHX202401052
15. [15]
  Suqing Shi , Anyang Li , Yuan He , Jianli Li , Xinjun Luan . Exploration and Practice of the “Progressive” Integrated Training Mode for Innovative Chemistry Talents at Comprehensive Universities in Western China. University Chemistry, 2024, 39(6): 42-49. doi: 10.3866/PKU.DXHX202402009
16. [16]
  Qiying Xia , Aixiang Wang , Dengxue Ma , Guokui Liu , Yunzhi Li , Xia Leng , Yaoyao Wei , Guangli Zhou . Science and Technology Empowerment, Production and Education Integration, High-Quality Applied Chemistry Talents Training 12345 Experimental Teaching System Innovation and Practice. University Chemistry, 2025, 40(7): 18-25. doi: 10.12461/PKU.DXHX202408133
17. [17]
  Jiamin Zhang , Zhen Fan , Jianzhong Du . Integrated Teaching Method Combining Domestic and International Perspectives: A Case Study on Cultivating Innovative Talents in Polymeric Biomaterials. University Chemistry, 2025, 40(7): 156-160. doi: 10.12461/PKU.DXHX202409131
18. [18]
  Qingfeng Zhang , Shang-E Wei , Hua Hou , Xuan Zhao , Zixuan Yang , Lin Zhuang . Construction and Reform of the Structural Chemistry Curriculum and Textbooks under the Chemistry “101 Plan”: an In-Depth Exploration for Cultivating Top-Notch Innovative Talents. University Chemistry, 2024, 39(10): 38-44. doi: 10.12461/PKU.DXHX202409047
19. [19]
  Qingying Gao , Tao Luo , Jianyuan Su , Chaofan Yu , Jiazhu Li , Bingfei Yan , Wenzuo Li , Zhen Zhang , Yi Liu . Refinement and Expansion of the Classic Cinnamic Acid Synthesis Experiment. University Chemistry, 2024, 39(5): 243-250. doi: 10.3866/PKU.DXHX202311074
20. [20]
  Yecang Tang , Shan Ling , Zhen Fang . Exploration of a Hierarchical and Integration-Oriented Talent Training Model in the Demonstration Center for Experimental Chemistry Education. University Chemistry, 2024, 39(7): 188-192. doi: 10.12461/PKU.DXHX202405107

Get Citation

PDF

XML

Metrics

PDF Downloads(10)
Abstract views(1501)
HTML views(314)

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142