^(97)Tc制备方法  

Preparation of ^(97)Tc

作　　者：王丽雄[1] 杨通在[1] 汤磊[1] 熊宗华[1] 杨君[1] 姜涛[1] 

机构地区：[1]中国工程物理研究院核物理与化学研究所,四川绵阳621900

出　　处：《核化学与放射化学》2007年第1期60-64,共5页Journal of Nuclear and Radiochemistry

摘　　要：为了采用同位素稀释质谱分析法准确测定环境中的痕量99Tc,需要以97Tc作稀释剂。采用天然Ru为辐照原料,建立了碱熔→水浸取→沉淀→萃取→阴离子交换的化学分离流程,确定了97Tc的制备工艺。该流程的化学产额大于70%,对Ru的去污因子大于107。The most sensitive analytical technique of 99 Tc is isotope dilution mass spectrometry with ^97Tc as yield tracer. ^97Tc was obtained by the irradiation of 2 g natural ruthenium metal. ^97Tc is isolated from the sample by combined ion-exchange chromatography, precipitation and ion-associatlon solvent extraction technique. ^99 Tc^m and ^103Ru are used as tracers in this method. The chemical recovery of Tc is more than 70% and the decontamination factor is more than 10^7.

关 键 词：裂变核素 TC 分离 RU 

分 类 号：O614.62[理学—无机化学]