无机阳离子的定性化学分析方法,现在采用的;主要有两大类:一是经典的系统分析法,特别是硫化氢的系统分析法,采用适当的组试剂进行系统分组,然后再加以分离和鉴定;另一种是个别分析法,采用特效试剂和点滴试验,一般不进行分组,可以快速检出个别阳离子。经典的系统分析法,有较为严谨的系统,逐步分离各离子,避免相互干扰;可以验证有关离子平衡的各项理论,便于教学上应用。但由于一再的沉淀、溶解和分离,操作步骤甚多,化费的时间较长,离子失去的机会亦多,不适于生产实际上的应用(苏联学者克莱许柯夫 Qualitative chemical analysis of inorganic cations now used; There are two main categories: First, the classic method of systematic analysis, especially the systematic analysis of hydrogen sulfide, using the appropriate group of reagents for system grouping, and then be separated and identified ; The other is the individual analysis method, the use of special effects reagents and drip test, generally do not group, you can quickly detect individual cations. Classical system analysis, a more rigorous system, the gradual separation of ions, to avoid mutual interference; can verify the theory of ion balance, easy to teach application. However, due to repeated precipitation, dissolution and separation, the operation steps are many, the longer the fee, the longer the chances of ions are lost, not suitable for the production of practical applications (Soviet scholar Klek Kauf