醇基电解液中锕的电沉积条件  

Studies on the optimal electrodeposition of actinium in alcohol-based electrolytes

作　　者：谢钟钖 於国兵 徐平[1] 龚籽月 闻德运 王金龙 许丰 陈志[1] XIE Zhongyang;YU Guobing;XU Ping;GONG Ziyue;WEN Deyun;WANG Jinlong;XU Feng;CHEN Zhi(University of Science and Technology of China,Hefei 230027,China;Anhui Environmental Radiation Supervision Station,Hefei 230071,China;Anhui University,Hefei 230601,China)

机构地区：[1]中国科学技术大学,合肥230027 [2]安徽省辐射环境监督站,合肥230071 [3]安徽大学,合肥230601

出　　处：《辐射研究与辐射工艺学报》2022年第4期24-29,共6页Journal of Radiation Research and Radiation Processing

摘　　要：为研究锕在醇基电解液中的最佳电沉积制样条件,利用Ac在硝酸/乙醇的电解液体系中进行了电沉积制样条件实验,分别研究了电沉积时间、电流大小、酸浓度、醇水比和电压等因素对锕电沉积制样的影响。结果表明:以硝酸/乙醇为电解液,电沉积时间为35 min,电流为0.15 A,硝酸浓度为0.05 mol/L,醇水比为90%,电解液体积为15 mL,在上述实验条件时,Ac的电沉积率可以达到90%以上,并且采用恒定电流法优于恒定电压法。本研究的方法可以应用到锕同位素的样品测量中。To determine the optimal electrodeposition conditions for actinium in a nitric acid/ethanol electrolyte, the228Ac nuclide was used for electrodeposition experiments in a nitric acid/ethanol electrolyte in this study. First, under a current of 0.1 A, the effect of the electrodeposition time on the electrodeposition of actinium was studied. Subsequently, under different currents, the effect of the direct current on the electrodeposition of actinium was studied(T=35 min). The effect of different acid concentrations on the electrodeposition of actinium was then studied(I=0.15 A, T=35 min). The influence of different alcohol-water ratios on actinium electrodeposition was also studied. The results showed that the electrodeposition yield of228Ac could reach more than 90% under the following electrodeposition conditions: nitric acid/ethanol as the electrolyte, an electrodeposition time of 35 min, a current of 0.15 A, a nitric acid concentration of 0.05 mol/L, an ethanol-water ratio of 90%, and an electrolyte volume of 15 mL. The optimized electrodeposition conditions for actinium can be applied to environmental samples to prepare an actinium alpha source.

关 键 词：电沉积 醇基电解液 228Ac 227Ac 

分 类 号：TL99[核科学技术—核技术及应用]