An automated ultracleanion exchange separation method for the determinations of 232 Th and 238 U in copper using inductively coupled plasma mass spectrometry
采用电感耦合等离子体质谱法测定铜中232 Th和238 U的全自动超净离子交换分离方法
作者: I.J. ArnquistM.L. di VacriE.W. Hoppe
作者单位: 1Pacific Northwest National Laboratory, Richland WA, 99354, USA
刊名: Nuclear Inst. and Methods in Physics Research, A, 2020, Vol.965
来源数据库: Elsevier Journal
DOI: 10.1016/j.nima.2020.163761
关键词: RadiopurityLow background material assayICP-MSCopperAutomated ion exchange chromatography
原始语种摘要: Abstract(#br)This work presents a novel analytical method for ultrasensitive (sub-pg g −1 ) determinations of Th and U in copper. The method is based on the use of clean sample preparation procedures and includes the use of an offline automated ion exchange separation method, followed by inductively coupled plasma mass spectrometric (ICP-MS) analysis. The separation system is equipped with a single reusable chromatographic column that, with the rigorously clean procedures developed herein, provided a low carryover, low background, and reproducible automated separation method. Isotope dilution methods were used for quantitation. Method Detection Limits (MDLs) of 3.7 and 9.4 fg g −1 were obtained for the quantitation of 232 Th and 238 U in copper, respectively, corresponding to activities...
全文获取路径: Elsevier  (合作)

  • automated 自动
  • separation 分选
  • coupled 耦合
  • exchange 交换
  • offline 脱机
  • reusable 可多次使用
  • copper 
  • plasma 深绿玉髓
  • background 背景
  • manually 手控