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本文研究并制定了在热铀溶液中分离测定Nb~(95)的方法。此方法是在格伦迪宁水解法测定铌的基础上加以改进而制定的。改进了做源的沉淀形式,以8-羟基喹啉铌的沉淀形式做源、称重、测量放射性强度。该法操作简单,适用于冷却了45天后热铀溶液中Nb~(95)的分离及测定。产额在75—90%的范围内。γ放射性测量的精密度以单值的相对标准偏差表示为1.5%,对单个元素的去污因数大于10~3,平行操作四个样品可以在4—5个小时内完成。
In this paper, a method for the separation and determination of Nb ~ (95) in uranium solution has been developed and developed. This method was developed on the basis of the Glendinen hydrolysis method for the determination of niobium. Improved source-made precipitation forms, sourced as precipitation of niobium 8-hydroxyquinoline, weighed and measured for radioactivity. The method is easy to operate and is suitable for the separation and determination of Nb ~ (95) in heat uranium solution after cooling for 45 days. The yield is in the range of 75-90%. The precision of gamma-radioactivity measurement is expressed as a single-point relative standard deviation of 1.5%, with a decontamination factor greater than 10 to 3 for a single element and four samples in parallel to be completed in 4-5 hours.