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前言金属铀及其化合物中硼的测定,多采用姜黄素、次甲基蓝、乙基紫分光光度法。这些方法的灵敏度高,但铀及稀有金属离子(如 Mo、Nb、Ta……)有干扰,因此,在测定前需进行化学分离,B_4~-选择电极对 BF_4~-有高的选择性,可望不经分离铀,采用电位法直接进行测定,虽灵敏度不及上述方法,但 BF_4~-选择电极电位法简便、快速,对于测定硼含量大于0.002％的铀浓缩物中的硼是一个较好的方法。目前,未见有用 BF_4~-电极测定金属铀及其化合物中硼的报道。
Preface Determination of boron in metallic uranium and its compounds, the use of more curcumin, methylene blue, ethyl violet spectrophotometry. These methods have high sensitivity but interfere with uranium and rare metal ions (such as Mo, Nb, Ta ...). Therefore, chemical separation is required before the measurement. B_4 ~ - selective electrode has high selectivity to BF_4 ~ It is expected that uranium can be separated without separation and measured directly by the potential method. Although the sensitivity is not as good as the above method, the BF_4 ~ - selective electrode potential method is simple and rapid, which is better for the determination of boron in uranium concentrates with the boron content greater than 0.002% Methods. At present, no useful BF_4 ~ - electrode determination of uranium metal and boron compounds reported.