The Mass Spectrometry society of Japan - The 68th Annual Conference on Mass Spectrometry, Japan
Japanese

Abstract

Table of contents

Timetable

Plenary Lectures

Award Lecture

Oral Sessions (Day1, Day2, Day3)

Poster Presentations (Day1, Day2, Day3)

Panel Discussion

Luncheon Seminars (Day1, Day2, Day3)

Corporate Program

Poster Presentations

Day 2, June 23（Thu.）　　Room P (501, 502 and 503)

2P-33（2C-O1-1040）　　PDF

On-line Elimination of Isobaric Interferences for 87Sr/86Sr Isotope Analysis though Ion-molecule Interaction in ICP-MS/MS

(Kwansei Gakuin Univ.)
oTakahiro Morimoto, Masaharu Tanimizu

In order to avoid the isobaric interference of 87Rb on 87Sr for 87Sr/86Sr isotope ratios, an analytical method has been developed using ICP-MS/MS, which can remove this interference inside of the instrument. Precise 87Sr/86Sr ratios were obtained by the internal correction of mass discrimination with 86Sr/88Sr through an adequate control of the ion-molecular reaction in the collision/reaction cell by optimizing the O2 flow rate and the kinetic energy of ions, without standard-sample bracketing techniques required in previous studies. Established technique was applied to several rock samples with various Rb/Sr ratios, ages and major element compositions, and consistent results with conventional methods were obtained in wide range of 87Sr/86Sr ratios.