大学化学 >> 2023, Vol. 38 >> Issue (4): 311-318.doi: 10.3866/PKU.DXHX202211083

所属专题： 第3届全国大学生化学实验创新设计竞赛

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自搭建离子色谱仪及其在无机阴离子检测方面的应用

李思媛, 李嘉辉, 刘泰恒, 陈招斌, 任斌()   

  • 收稿日期:2022-11-26 录用日期:2023-01-11 发布日期:2023-03-21
  • 通讯作者: 陈招斌,任斌 E-mail:bren@xmu.edu.cn

Self-Built Ion Chromatography and Its Application in Testing Inorganic Anions

Siyuan Li, Jiahui Li, Taiheng Liu, Zhaobin Chen, Bin Ren()   

  • Received:2022-11-26 Accepted:2023-01-11 Published:2023-03-21
  • Contact: Zhaobin Chen, Bin Ren E-mail:bren@xmu.edu.cn

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摘要：

为了帮助学生深入理解化学分析仪器的构造和工作原理，训练学生的创新思维、实践能力和团队协作能力，增强学生在化学分析仪器相关的基础实验中的参与感，设计了可供学生自行搭建离子色谱仪的新创实验，并将其应用于无机阴离子的检测。实验包含具有完整功能的离子色谱仪整机以及关键部件“电化学离子抑制器”的组装搭建，仪器基本功能的调试和性能测试以及自来水、湖水和茶水等实际水样中阴离子的定性和定量检测。该项目采用商品化的标准组件和自行加工的部件来搭建仪器，实验复现性高，还可以有效训练指导教师专业综合素质，显著提升基础实验教学效果和水平。与商品化整机比较，价格低廉，对教学经费投入要求低，适合在高校中化学及相关专业的仪器分析基础实验教学中推广。

关键词: 离子色谱, 抑制器, 无机阴离子

Abstract:

Self-built ion chromatography and its application in testing inorganic anions offers an experiment for students of chemistry major to build and debug the ion chromatography by themselves. The new experiment includes the assembly and construction of ion chromatographic system including its key component of electrochemical ion suppressor, the debugging of the function and measurement of the performance of the instrument, and the qualitative and quantitative analysis of the inorganic anions in real samples, such as tap water, lake water and tea drink. It is conducive to deepening students' understanding of the principle and configuration of the instrument for chemical analysis. It also helps improve the creative thinking, practical ability, and team work of students. Furthermore, the students can be heavily involved during the experiment. As the project uses commercially available standard components and home-built components to construct the instrument, the experiment can be finished with a high reproducibility and success rate. This experiment can also serve as a tool to improve the capability of instructors and the teaching performance. This self-built ion chromatography is much cheaper than the commercial one and has low request on the teaching cost, which is suitable to be extended to the fundamental laboratory course in Instrumental Analysis in most universities.

Key words: Ion chromatography (IC), IC suppressor, Inorganic anions