Determining ⁸⁸Sr/⁸⁶Sr of barite using the Na₂CO₃ exchange method

Abstract

This study presents a method of high precision stable Sr isotope measurement for barite using the Na2CO3 exchange reaction and MC-ICP-MS. The reliability of this method was strictly tested by...

An efficient method for the separation of REEs from Ba for the accurate determination of REE content in Ba-rich samples by ICP-MS

“…However, to the best of our knowledge, there is no such data available for the REEs found in barite reference materials, and even barite reference materials are relatively poorly understood. Here, we managed to obtain four natural barite standards (GBW07811, GBW07813, GBW07816 and GBW07817) with different BaSO 4 types (iron-barite, uorite-barite, sulde-barite and clay-barite, respectively) with respective barite contents of (42.41 wt%, 41.46 wt%, 18.87 wt% and 40.54 wt%) and Ba contents (24.95 wt%, 24.40 wt%, 11.10 wt% and 23.85 wt%), for which only the Ba or Sr isotope compositions have been reported 39,46 but not the REE content.…”

Atomic spectrometry update: review of advances in atomic spectrometry and related techniques

“…Stable Sr isotope measurement of barite was investigated by Sun et al 193 Barite is difficult to dissolve, and strategies have to be deployed to achieve complete solution, yet not fractionate or contaminate Sr. The study used a Na 2 CO 3 exchange method with excessive Na 2 CO 3 which avoided Sr isotopic fractionation during this reaction.…”