碳酸铀酰铵是铀水冶厂的产品,又是制备四氟化铀的原料,其中硫酸根的测定是项重要的分析项目。目前厂矿采用的硫酸钡比浊法误差较大。杨淳庆曾用装有3克活性氧化铝的交换柱使SO_4~(2-)从UO_2~(2+)中分离出来,然后以1-(2-吡啶偶氮)-2-苯酚(PAN)为指示剂在吡啶介质中用硝酸铅滴定获得较好结果。但是,该方法分析一批样品需3小时, Uranyl ammonium carbonate is a uranium hydro-metallurgical plant products, but also the preparation of uranium tetrafluoride raw materials, of which the determination of sulfate is an important analysis of the project. At present, the mill with barium sulfate turbidimetric error. Yang Chunqing had separated SO_4 ~ (2-) from UO_2 ~ (2+) with an exchange column packed with 3g of activated alumina and then was separated with 1 - (2-pyridylazo) -2-phenol The indicator was titrated with lead nitrate in pyridine medium to obtain better results. However, the method to analyze a batch of samples takes 3 hours,