本文拟定了天然物质中微量鈾的測定方法。用硝酸分解称样,以乙醚萃取溶解的硝酸鈾酰。向萃取液中加入氟化鈉,液体蒸去后,把沉淀物熔融,在研究熔球萤光的同时,测定出鈾的含量(在含量<0.001%的情况下)。濃度較高时,則用硫酸处理乙醚萃取物,和拍攝鈾酰离子的还原极譜波。 This paper developed a method for the determination of trace amounts of uranium in natural materials. Dissolve the sample with nitric acid and extract the dissolved uranyl nitrate with ether. Sodium fluoride was added to the extract. After the liquid was distilled off, the precipitate was melted. The uranium content (at a content of <0.001%) was determined while studying the fluorescence of the melt. At higher concentrations, the ether extract is treated with sulfuric acid and the polarographic polarographic wave of uranyl ions is taken.