高等学校化学学报Issue(2)：248-253,6.DOI:10.7503/cjcu20140631
浓缩钼同位素的纯化新方法及质量分馏测定
Novel Purification Method for Isotopically Enriched Molybdenum and Determination of Its Mass Fractionation Effect
摘要
Abstract
A novel purification method for isotopically enriched molybdenum was established according to the differences in sublimation temperature of MoO3 comparing with other species. The oxidation time, sample volume and sublimation temperature in this procedure were optimized using Synthetic-Mo with nature Mo com-positions. As measured by HR-ICP-MS, Mo could be effectively separated from other matrix elements, and the purities of 95 Mo and 98 Mo were 99.992% and 99.990%, respectively, after purification. Isotopic composi-tions of Synthetic-Mo and Purified-MoO3 samples were determined by MC-ICP-MS, theirδX/95Mo(X=92, 94, 97 , 98 , 100 ) values were indistinguishable within analytical uncertainty (<0.3‰) , revealing that isotopic fractionation of Mo was unlikely during purification. The proposed purification method is of great importance in developing high-accuracy measurement method for isotopic compositions of Mo.关键词
浓缩钼同位素/纯化/质量分馏Key words
Isotopically enriched molybdenum/Purification/Mass fractionation分类
化学化工引用本文复制引用
宋盼淑,王军,任同祥,周涛,逯海..浓缩钼同位素的纯化新方法及质量分馏测定[J].高等学校化学学报,2015,(2):248-253,6.基金项目
国家科技支撑计划项目(批准号:2013BAK10B04)和中国博士后科学基金(批准号:2014M550787)资助 （批准号:2013BAK10B04）
