负热电离同位素稀释质谱法分析锝97稀释剂  

Analysis of ^(97)Tc Spike by Negative Thermal Ionization Mass Spectrometry

作　　者：刘雪梅[1] 汤磊[1] 龙开明[1] 杨天丽[1] 刘钊[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：《岩矿测试》2010年第4期368-372,共5页Rock and Mineral Analysis

摘　　要：用负热电离质谱法对自行研制生产的97Tc稀释剂同位素组成进行分析测定,并采用同位素稀释质谱法对其浓度进行标定,选用等概率模型对同位素比值测定结果进行校正,组成分析扩展不确定度为1.3%(K=2),浓度标定扩展不确定度为2.07%(K=2)。97Tc spike produced by our laboratory was analyzed by negative thermal ionization mass spectrometry（NTIMS）.Equal-probability model was used for correction of isotope ratio measurements.The isotope ratio of 97Tc spike was measured with the expanded uncertainty of 1.3%（K=2）.97Tc concentration was also determined by isotope dilution mass spectrometry（IDMS） with the expanded uncertainty of 2.12%（K=2）.

关 键 词：锝 稀释剂 负热电离质谱法 等概率模型 

分 类 号：O657.63[理学—分析化学] O614.712[理学—化学]