标准编号：ISO 7097-2:2022
中文名称：核燃料技术 在溶液、六氟化物和固体中铀的测定-第1部分： 还原铁 （IV ） /氧化铈滴定法
英文名称：Nuclear fuel technology — Determination of uranium in solutions, uranium hexafluoride and solids — Part 2: Iron(II) reduction/cerium(IV) oxidation titrimetric method
发布日期：2022-11
标准范围
This document describes an analytical method for the determination of uranium in samples from pure product materials such as U metal, UO , UO , U O , uranyl nitrate hexahydrate and uranium 2 3 3 8 hexafluoride from the nuclear fuel cycle. This procedure is sufficiently accurate and precise to be used for nuclear materials accountability. This method can be used directly for the analysis of most uranium and uranium oxide nuclear reactor fuels, either irradiated or un-irradiated, and of uranium nitrate product solutions. Fission products equivalent to up to 10 % burn-up of heavy atoms do not interfere, and other elements which could cause interference are not normally present in sufficient quantity to affect the result significantly. The method recommends that an aliquot of sample is weighed and that a mass titration is used, in order to obtain improved precision and accuracy. This does not preclude the use of alternative techniques which could give equivalent performance. The use of automatic device(s) in the performance of some critical steps of the method has some advantages, mainly in the case of routine analysis.
立即下载标准文件