现有的化学分析方法,由于分析所需之时间较长,以及仪器设备的费用太大,对工厂的现场分析及地质工作者现场分析,是不很适用的。苏联的科学工作者对快速的化学分析法进行了很多的研究,定出了一系列的快速分析法,其中大多是应用半微量分析或半量分析,以减少试剂需用量以及分析所需之时间。茲介绍苏联的快速化学分析法要点于下:容量分析铝和硅的测定以一定量之邻位苯醌沉淀铝和硅,以溴回滴过量之邻位苯醌,可测定出铝和硅的含量。以苛性钠将铁和硅的样品熔融,从得到的溶液分别测定铝和硅。在醋酸溶液中加钼酸可使铝 Existing chemical analysis methods are not suitable for on-site analysis of factory and on-site analysis by geologists because of the long time required for analysis and the large cost of equipment. Soviet scientists have done a lot of research on rapid chemical analysis and have come up with a series of rapid analyzes, mostly semi-micro or semi-quantitative, to reduce the amount of reagents required and to analyze the time required. Here is a quick chemical analysis of the Soviet Union. The main points are as follows: Volumetric analysis Determination of aluminum and silicon Aluminum and silicon are precipitated by a certain amount of ortho-benzoquinone, ortho- content. Iron and silicon samples were melted with caustic soda, and the resulting solutions were tested for aluminum and silicon, respectively. Add molybdic acid in acetic acid solution can make aluminum