“废液中重金属离子含量测定”开放实验的设计

Design of an open experiment for the determination of heavy metal ions in waste liquid

结合学生仪器分析实验过程中出现的问题,利用某企业生产过程中产生的废液,为学生设计了一个利用火焰原子吸收光谱法测定废液中Cu、Pb、Zn、Cd含量的开放实验。该开放实验中通过对仪器工作条件和样品消解方法的选择,有助于提高学生的动手能力以及运用所学分析方法解决实际问题的能力。另外,通过该开放实验充分发挥了实验室现有资源的作用,提高了仪器设备的利用率。

In this article,we designed an open experiment for students. It determined the content of Cu,Pb,Zn and Cd in the waste liquid by using Flame Atomic Absorption Spectrometry. In this experiment,the students' ability was practiced by choosing the working conditions of instruments and sample digestion methods. This open experiment made full use of the existing resources of laboratory. In addition,The utilization of laboratory equipment was improved.