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矿物岩石中铀的化学分析普遍采用亚锡磷酸还原-钒酸盐容量法、亚钛磷酸还原-钒酸盐容量法和亚铁磷酸还原-钒酸盐容量法。在这三个分析方法中,国内外科学工作者都公认为钒酸铵浓度与铀(Ⅳ)量成正比线性关系,从而导出钒酸铵对铀的滴定度(以下简称滴定度)的浓度概念,即1毫升钒酸铵溶液相当于铀的克数,以符号T表示。近几年来,国内不少科学工作者与我们都遇到取不同量标准铀所标定钒酸铵滴定度T值不一致的现象;
The chemical analysis of uranium in mineral rocks commonly uses the SnPb-vanadate capacity method, the titanate-phosphate-vanadate capacity method, and the ferrous phosphate-vanadate capacity method. Among the three analytical methods, scientists both at home and abroad generally agree that ammonium vanadate concentration is directly proportional to the amount of uranium (IV), thus deriving the concept of concentration of ammonium vanadate for uranium titer (hereinafter referred to as titer) , That is, 1 ml of ammonium vanadate solution corresponds to grams of uranium, indicated by the symbol T. In recent years, many scientists in our country have encountered inconsistencies in T values of ammonium vanadate titrated with different amounts of standard uranium.