本工作研究了采用落滴法测定重水研究堆(HWRR)重水浓度的实验方法。探讨落滴有机混合介质的选择和配制技术,建立配制重水标样的方法,制备从低浓度到高浓度的一系列重水标准样品,制作D_2O摩尔百分数为(5—100)%的12个浓度段的工作曲线,进行了试剂稳定性试验,并测定和讨论了分析误差。实验结果表明,本方法的标 In this work, the experimental method for determining the concentration of heavy water in a heavy water research reactor (HWRR) by falling drop method was studied. In this paper, the selection and preparation technology of droplet organic mixed media was discussed, and a method of preparing heavy water standard sample was established. A series of heavy water standard samples were prepared from low concentration to high concentration, and 12 concentration sections with D2O mole fraction of (5-100)% Of the working curve, a reagent stability test, and to determine and discuss the analysis of errors. The experimental results show that the method of the standard