一、试验目的三氧化二铝是电解法生产铝的基本原料,要求其具有较高的纯度,因而准确地分析其中杂质氧化铁和氧化矽的含量就有重要的意义。目前所采用的化学分析方法不仅手续繁复、时间冗长、而且药材消耗量多准确度也不够高,因而有采用光谱分析方法的必要。关于用光谱分析方法测定三氧化二铝中杂质的问题,1955年中国科学院分析报告会上盧之锦等同志曾提出过用直流电弧为光源并采用加入绥冲剂的方法,但手续仍然不够简便,不适于在工厂实验室的条件下工作。为了要在工厂实验室的条件和要求下,使用简便准确的方法来测定三氧化二铝中的杂质,我们 First, the purpose of the test Aluminum oxide is the basic raw material for the production of aluminum electrolysis, requiring a higher purity, and thus accurate analysis of the impurities iron oxide and silicon oxide content is of great significance. At present, the chemical analysis method adopted is not only complicated, time-consuming, and the accuracy of the consumption of medicinal materials is not high enough, so there is a need for adopting a spectroscopic analysis method. On the use of spectral analysis of aluminum oxide impurities in the analysis of the report of the Chinese Academy of Sciences in 1955, Lu Jin and other comrades had proposed the use of DC arc as a light source and the use of Sui Chong agent added method, but the formalities are still not simple enough, Not suitable for working in factory lab conditions. In order to be in the factory laboratory conditions and requirements, the use of simple and accurate method to determine the impurities in aluminum oxide, we