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作为APOR流程选定的无盐还原剂,DMHAN和MMH的辐照稳定性能是评价还原剂能否使用的重要指标。本工作建立了不同体系中无盐试剂二甲基羟胺、甲基肼、乙异羟肟酸及其辐解产物的酸碱滴定、分光光度、离子色谱、气相色谱等分析方法。完成了DMHAN、MMH的γ、α辐照稳定性研究,实验结果表明,辐照剂量增加无盐试剂的分解量增加,但是在1B和2B相应工艺条件下,辐
As the salt-free reductant selected by the APOR process, the radiation stability of DMHAN and MMH is an important indicator for evaluating the availability of reducing agents. In this work, the analytical methods of acid-base titration, spectrophotometry, ion chromatography and gas chromatography of salt-free reagents dimethylhydroxylamine, methylhydrazine, acetohydroxamic acid and their radiolysis products in different systems were established. The stability of γ, α radiation of DMHAN and MMH has been studied. The experimental results show that the decomposition of salt-free reagent increases with the increase of irradiation dose. However, under the corresponding processing conditions of 1B and 2B,