质谱学报2012，Vol.33Issue(6)：349-352,369,5.
同位素稀释-热电离质谱法测定乏燃料中裂变产物121Sn和126Sn
Determination of the Fission Products 121Sn and 126Sn in Spent Fuel by Isotope Dilution-Thermal Ionization Mass Spectrometry
梁帮宏 1张劲松 1李已才 1陈云明 1张舸 1杜文鹤1
作者信息
- 1. 中国核动力研究设计院,四川成都610005
- 折叠
摘要
Abstract
The spent fuel was radioactivity. Its matrix was complicated and the content of tin was low. So measurement of tin in spent fuel was difficult. 121 Sn and 126Sn in spent nuclear fuel element were determined by isotope dilution-thermal ionization mass spectrometry(ID-TIMS) using natural standard tin solution as spike. The sample loading techniques of silica gel-tin-phosphate was employed. Ionization filaments heating rate and temperature holding time was optimized. Thirteen signals are collected by retarding potential quadrupole (RPQ), which effectively eliminating isobaric interferences of Te,Sb and CaPO3+ . The content and isotopic abundance of ng/g level of Sn is obtained. The mass concentration of 121 Sn and 126Sn in spent fuel are 5. 5 ng/g and 230. 5 ng/g, measurement uncertainty are 4.2% and 1. 4%(k = 2), respectively.关键词
锡/裂变产物/乏燃料元件/同位素稀释-热电离质谱法(ID-TIMS)Key words
tin/fission products/ spent fuel/ isotope dilution-thermal ionization mass spectrometry(ID-TIMS)分类
化学化工引用本文复制引用
梁帮宏,张劲松,李已才,陈云明,张舸,杜文鹤..同位素稀释-热电离质谱法测定乏燃料中裂变产物121Sn和126Sn[J].质谱学报,2012,33(6):349-352,369,5.
