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本刊1963年第6期发表了韓葆玄同志等的“阳离子定性分析法”一文,采用初步試驗和个別分析相結合的方法。既簡便快速,适用于生产实踐;又有一定的系统性,便于教学上应用,确是阳离子定性分析的一个比較好的方案,但这个方案,对于在硫化氫分析系統中,碱土金属离子易于誤失的問題,仍没有解决。按照文献記載,Ba~(++)、Sr~(++)、Ca~(++)离子在硫化氫分析系統中誤失的原因虽是多方面的,但主要的原因,却是氫氧化銨和硫化銨試剂中含有CO_3~=、SO_4~=、PO_4~=等离子。該文在附注中虽然說明硫化銨試剂应新配,并須檢查氯化銨、氫氧化銨和硫化銨試剂中是否含有这些离子;但
The publication of the sixth issue of 1963, published by Comrade Han Baoxuan, “qualitative analysis of cation” article, using a combination of preliminary tests and individual analysis methods. It is simple and fast and suitable for production practice. It has a certain systematicness and is convenient for teaching. It is indeed a good solution for cation qualitative analysis. However, in this scheme, for the hydrogen sulfide analysis system, the alkaline earth metal ions are easy to be The problem of mistake, still not solved. According to the literature, although there are many reasons why Ba ~ (++), Sr ~ (++) and Ca ~ (++) ions are missed in the hydrogen sulphide analysis system, the main reason is the oxidation of hydrogen Ammonium and ammonium sulfide reagent contains CO_3 ~ =, SO_4 ~ =, PO_4 ~ = plasma. Although the note states that the ammonium sulphide reagent should be freshly prepared and examined for the presence of these ions in ammonium chloride, ammonium hydroxide and ammonium sulphide reagents