Examination of analytical conditions of cerium (Ce) isotope and stable isotope ratio of Ce in geochemical standards
作者: Ryoichi NakadaNaoko AsakuraKazuya Nagaishi
作者单位: 1Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
2Marine Works Japan Ltd.
刊名: GEOCHEMICAL JOURNAL, 2019, Vol.53 (5), pp.293-304
来源数据库: J-STAGE Journals
DOI: 10.2343/geochemj.2.0567
关键词: Cerium isotope ratioMC-ICP-MSAnalytical conditionGeochemical standardsDesolvating nebulizer
原始语种摘要: The cerium isotope ratio (δ142Ce), a novel proxy reflecting the paleoredox condition, yields more quantitative information related to the redox condition than Ce anomaly alone. However, sample amounts and analytical precision represent bottlenecks for Ce isotope measurements using multi-collector (MC-)ICP-MS. Sample treatment processes and analytical conditions of MC-ICP-MS using desolvating nebulizer were examined for this study. Our new cation exchange process removes most of the Ba, which is worthwhile for REE measurement. The examination of analytical conditions, including the sampling cone, torch Z position, Guard Electrode, Ar sweep, and N2 gas greatly decreases the oxide formation ratio from approximately 1% (typical wet plasma mode) to less than 0.05%, which caused the great...
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  • ratio 
  • Ce 元素铈(cerium)的符号
  • standard 标准
  • conditions 条件式
  • analytical 分析的
  • isotope 同位素
  • solution 溶液
  • stable 稳定的
  • achieved 获得的
  • nebulizer 喷雾器