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前言为解决岩石矿物中痕量铀的测定,我们在氯化铵-亚硝基苯胲胺铵盐=二苯胍体系中找到了铀的极谱催化波,由于加入小量二苯胍使铀的灵敏度比文献中测铀的灵敏度提高几十到几百倍,在此体系中铀的浓度在0.0002-0.0012微克/毫升间呈直线关系。本文还作了测铀的各种条件实验,采用TBP萃取色层法富集铀,同时分离一些干扰元素,此法现已应用于测定矿石中痕量铀。
Preface To solve the determination of trace amounts of uranium in rock minerals, we found a polarographic catalytic wave of uranium in ammonium chloride - nitrosophenylammonium salt = diphenylguanidine system. Since a small amount of diphenylguanidine was added to uranium Sensitivity is ten to several hundred times higher than the sensitivity of the uranium measured in the literature. The concentration of uranium in this system has a linear relationship between 0.0002-0.0012 μg / ml. In this paper, various conditions of uranium testing were also tested. The method of TBP extraction was used to enrich uranium and separate some disturbing elements. This method has been applied to the determination of trace uranium in ore.