论文部分内容阅读
本文提供了一个阴离子交换分离,控制电位库仑法测定辐照后核燃料元件溶解液大量铀中小量钚的方法。钚(Ⅳ)在7.5 NNO_3介质中吸附在711型树脂床上,用7.5N HNO_3洗涤铀、裂变产物和其它杂质元素后,用0.5N HNO_3-0.02M NH_2OH·HCI洗涤钚,最后以1 NHN0_3为支持电解质,金丝网作工作电极进行库仑测定。测定范围为1—4 mg钚。用化学校正方法,对辐照后核燃料元件溶解液样品7次平行测定的相对标准偏差为±0.33%。
This article provides a method for the anion exchange separation and control potential coulometric determination of small quantities of uranium in plutonium after irradiation of nuclear fuel element solution. Plutonium (Ⅳ) was adsorbed on a 711 resin bed in 7.5 NNO 3 media. After washing uranium, fission products and other impurity elements with 7.5 N HNO 3, plutonium was washed with 0.5 N HNO 3-0.02 M NH 2 OH · HCl and finally with 1 NHN 0 3 Electrolyte, gold mesh for the working electrode coulometric determination. The measurement range is 1-4 mg plutonium. Using the chemical calibration method, the relative standard deviation (RSD) of seven parallel determinations of samples irradiated with irradiated nuclear fuel elements was ± 0.33%.