摘要
针对反应堆乏燃料溶解液和铀产品溶液的高放射性水平,在钼催化硫酸亚铁还原/重铬酸钾氧化电位滴定法精密测定铀的基础上,从取样量和自动化两方面入手,以降低用自动电位滴定法精密测定小量铀对分析人员的放射性危害。研究结果表明,采用自动电位滴定仪,在取铀量为10mg时,测定精密度优于0.06%,通过校正,可使结果更加准确可靠。该方法可有效降低放射性对分析人员的危害,同时又满足了反应堆乏燃料溶解液和铀产品溶液精密测定铀的准确度要求。
For high radioactivity level of dissolved solution of spent fuel and the solution of uranium product, radioactive hazard must be considered and reduced as low as possible during accurate determination of uranium. In this work automatic potentiometric titration was applied and the sample only 10 mg of uranium contained was taken in order to reduce the harm of analyzer suffered from the radioactivity. RSD〈0.06%, at the same time the result can be corrected for more reliable and accurate measurement. The determination method can effectively reduce the harm of analyzer suffered from the radioactivity, and meets the requirement of reliable accurate measurement of uranium.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2007年第5期546-549,共4页
Atomic Energy Science and Technology
关键词
铀
自动电位滴定
重铬酸钾
uranium
automatic potentiometric titration
K2Cr2O7
