引言用直接加还原剂于铀(Ⅵ)溶液的容量法不多,伏尔柯夫的磷酸盐法是其中较佳的一种。笔者等人曾对溶液中铀(Ⅵ)浓度的变化与钼和铜的干扰等因素加以研究。在伏尔柯夫法中直接加四氧二硫酸钠作还原剂。四氧二硫酸钠,又称“保险粉”,价格昂贵,而且是一种危险药品,为此,笔者等人建议用普通商业用的铝箔代替四氧二硫酸钠作还原剂,改进的伏尔柯夫法的主要反应为 Introduction With direct addition of reducing agent in the uranium (Ⅵ) solution volume method is small, Volkoff’s phosphate method is one of the better. The author et al. Studied the change of uranium (Ⅵ) concentration in solution and the interference of molybdenum and copper. In the Volkov method directly with sodium 4-oxide as a reducing agent. Sodium tetrapropoxysulfate, also known as “insurance powder”, expensive, but also a dangerous drug, to this end, I recommend using ordinary commercial aluminum foil instead of sodium tetrasulfate as reductant, improved Volta Koffe’s main reaction is