一、定性分析的地位和作用定性分析的任务是鉴定物质的定性组成。亦即检出物质是由哪些元素或离子组成的。在工作程序上,定性分析应先于定量分析。因为只有在了解了试样中究竟含有哪些元素或离子存在以后,才能选择适当的定量分析方法。在学习分析化学的程序上,也是定性分析 First, the status and role of qualitative analysis Qualitative analysis of the task is to identify the qualitative composition of matter. That is, it detects which elements or ions the material is composed of. In the working procedure, qualitative analysis should be preceded by quantitative analysis. Because only after you know exactly what elements or ions contained in the sample exist, can you choose the appropriate quantitative analysis. In the study of analytical chemistry procedures, but also qualitative analysis