日本質量分析学会 第69回質量分析総合討論会会

演題概要

ポスター発表

第3日 5月21日(金)  P1会場(Zoom)

イオン-分子間相互作用を用いた同重体イオンおよび多原子分子イオン干渉除去による元素同位体分析手法の検討

(関学理工)
o森本貴裕谷水雅治

We investigated the ion-molecule interaction between 87Sr+ and various reaction gases to eliminate the isobaric interference of 87Rb+ on 87Sr+ to apply for Rb-Sr radiometric dating, because age of igneous rocks are determined based on the beta- decay of 87Rb to 87Sr with the half-life of 4.88×1010 years. We aimed to determine 87Sr/86Sr isotope ratio without sample pretreatments by separating the isobaric interference within ICP-MS/MS by ion-molecule interaction by changing the type of gases, gas flow rate, etc.